Backported PRs:
- [x] #48625 <!-- add replace(io, str, patterns...) -->
- [x] #48387 <!-- Improve documentation of sort-related functions -->
- [x] #48363 <!-- Revise sort.md and docstrings in sort.jl -->
- [x] #48977 <!-- Update SparseArrays.jl stdlib for SuiteSparse 7 -->
- [x] #50719 <!-- fix `CyclePadding(::DataType)` -->
- [x] #50694 <!-- inference: permit recursive type traits -->
- [x] #50860 <!-- Add `Base.get_extension` to docs/API -->
- [x] #50594 <!-- Disallow non-index Integer types in isassigned -->
- [x] #50802 <!-- Makes IntrusiveLinkedListSynchronized mutable to avoid
allocation on poptask -->
- [x] #50858 <!-- Add a `threadpool` parameter to `Channel` constructor
-->
- [x] #50874 <!-- Restrict COFF to a single thread when symbol count is
high -->
- [x] #50822 <!-- Add default method for setmodifiers! -->
- [x] #50730 <!-- Fix integer overflow in `isapprox` -->
- [x] #50850 <!-- Remove weird Rational dispatch and add pi functions to
list -->
- [x] #50809 <!-- Limit type-printing in MethodError -->
- [x] #50915 <!-- Add note the `Task` about sticky bit -->
- [x] #50929 <!-- when widening tuple types in tmerge, only widen the
complex parts -->
- [x] #50928 <!-- Bump JuliaSyntax to 0.4.6 -->
- [x] #50959 <!-- Update libssh2 patches -->
- [x] #50823 <!-- Make ranges more robust with unsigned indexes. -->
- [x] #48542 <!-- Add docs on task-specific buffering using
multithreading -->
- [x] #50912 <!-- Separate foreign threads into a :foreign threadpool
-->
- [x] #51010 <!-- Add ORIGIN to SuiteSparse rpath on Linux/FreeBSD -->
- [x] #50753 <!-- cat: remove unused promote_eltype methods that confuse
inference -->
- [x] #51027 <!-- Implement realloc accounting correctly -->
- [x] #51019 <!-- fix a case of potentially use of undefined variable
when handling error in distributed message processing -->
- [x] #51039 <!-- Revert "Optimize findall(f, ::AbstractArray{Bool})
(#42202)" -->
- [x] #51036 <!-- add missing invoke edge for nospecialize targets -->
- [x] #51042 <!-- inference: fix return_type_tfunc modeling of concrete
functions -->
- [x] #51114 <!-- Workaround upstream FreeBSD issue #272992 -->
- [x] #50892 <!-- Add `JL_DLLIMPORT` to `small_typeof` declaration -->
- [x] #51154 <!-- broadcast: use recursion rather than ntuple to map
over a tuple -->
- [x] #51153 <!-- fix debug typo in "add missing invoke edge for
nospecialize targets (#51036)" -->
- [x] #51222 <!-- Check again if the tty is open inside the IO lock -->
- [x] #51236 <!-- Add lock around uv_unref during init -->
- [x] #51243 <!-- GMP: Gracefully handle more overflows. -->
- [x] #51254 <!-- Ryu: make sure adding zeros does not overwrite
trailing dot -->
- [x] #51175 <!-- shorten stale_age for cachefile lock -->
- [x] #51300 <!-- fix method definition error for bad vararg -->
- [x] #51307 <!-- fix force-throw ctrl-C on Windows -->
- [x] #51303 <!-- ensure revising structs is safe -->
- [x] #51393 
- [x] #51403 

Need manual backport:
- [x] #51009 <!-- fix #50562, regression in `in` of tuple of Symbols -->
- [x] #51053 <!-- Bump Statistics stdlib -->
- [x] #51013 <!-- fix #50709, type bound error due to free typevar in
sparam env -->
- [x] #51305 <!-- reduce test time for rounding and floatfuncs -->

Contains multiple commits, manual intervention needed:
- [ ] #50663 <!-- Fix Expr(:loopinfo) codegen -->
- [ ] #51035 <!-- refactor GC scanning code to reflect jl_binding_t are
now first class -->
- [ ] #51092 <!-- inference: fix bad effects for recursion -->
- [x] #51247 <!-- Check if malloc has succeeded before incrementing gc
stats -->
- [x] #51294 <!-- use LibGit2_jll for LibGit2 library -->

Non-merged PRs with backport label:
- [ ] #51132 <!-- Handle `AbstractQ` in concatenation -->
- [x] #51029 <!-- testdefs: make sure that if a test set changes the
active project, they change it back when they're done -->
- [ ] #50919 <!-- Code loading: do the "skipping mtime check for stdlib"
check regardless of the value of `ispath(f)` -->
- [ ] #50824 <!-- Add some aliasing warnings to docstrings for mutating
functions -->
- [x] #50385 <!-- Precompile pidlocks: add to NEWS and docs -->
- [ ] #49805 <!-- Limit TimeType subtraction to AbstractDateTime -->

Backported PRs:
- [x] #50932 <!-- types: fix hash values of Vararg -->
- [x] #50975 <!-- Use rr-safe `nopl; rdtsc` sequence -->
- [x] #50989 <!-- fix incorrect results in `expm1(::Union{Float16,
Float32})` -->
- [x] #51284 <!-- Avoid infinite loop when doing SIGTRAP in arm64-apple
-->
- [x] #51332 <!-- Add s4 field to Xoshiro -->
- [x] #51397 <!-- call Pkg precompile hook in latest world -->
- [x] #51405 <!-- Remove fallback that assigns a module to inlined
frames. -->
- [x] #51491 <!-- Throw clearer ArgumentError for strip with two string
args -->
- [x] #51531 <!-- fix `_tryonce_download_from_cache` (busybox.exe
download error) -->
- [x] #51541 <!-- Fix string index error in tab completion code -->
- [x] #51530 <!-- Don't mark nonlocal symbols as hidden -->
- [x] #51557 <!-- Fix last startup & shutdown precompiles -->
- [x] #51512 <!-- avoid limiting Type{Any} to Type -->
- [x] #51595 <!-- reset `maxprobe` on `empty!` -->
- [x] #51582 <!-- Aggressive constprop in LinearAlgebra.wrap -->
- [x] #51592 <!-- correctly track element pointer in heap snapshot -->
- [x] #51326 <!-- complete false & true more generally as vals -->
- [x] #51376 <!-- make `hash(::Xoshiro)` compatible with `==` -->
- [x] #51557 <!-- Fix last startup & shutdown precompiles -->
- [x] #51845 
- [x] #51840 
- [x] #50663 <!-- Fix Expr(:loopinfo) codegen -->
- [x] #51863 <!-- LLVM 15.0.7-9 -->

Contains multiple commits, manual intervention needed:

- [ ] #51035 <!-- refactor GC scanning code to reflect jl_binding_t are
now first class -->
- [ ] #51092 <!-- inference: fix bad effects for recursion -->

Non-merged PRs with backport label:
- [ ] #51479 <!-- prevent code loading from lookin in the versioned
environment when building Julia -->
- [ ] #51414 <!-- improvements on GC scheduler shutdown -->
- [ ] #51366 <!-- Handle infix operators in REPL completion -->
- [ ] #50919 <!-- Code loading: do the "skipping mtime check for stdlib"
check regardless of the value of `ispath(f)` -->
- [ ] #50824 <!-- Add some aliasing warnings to docstrings for mutating
functions in Base -->
- [ ] #49805 <!-- Limit TimeType subtraction to AbstractDateTime -->

…50824)

(cherry picked from commit 58030da)

Backported PRs:
- [x] #51213 <!-- Wait for other threads to finish compiling before
exiting -->
- [x] #51520 <!-- Make allocopt respect the GC verifier rules with non
usual address spaces -->
- [x] #51598 <!-- Use a simple error when reporting sysimg load
failures. -->
- [x] #51757 <!-- fix parallel peakflop usage -->
- [x] #51781 <!-- Don't make pkgimages global editable -->
- [x] #51848 <!-- allow finalizers to take any locks and yield during
exit -->
- [x] #51847 <!-- add missing wait during Timer and AsyncCondition close
-->
- [x] #50824 <!-- Add some aliasing warnings to docstrings for mutating
functions in Base -->
- [x] #51885 <!-- remove chmodding the pkgimages -->
- [x] #50207 <!-- [devdocs] Improve documentation about building
external forks of LLVM -->
- [x] #51967 <!-- further fix to the new promoting method for
AbstractDateTime subtraction -->
- [x] #51980 <!-- macroexpand: handle const/atomic struct fields
correctly -->
- [x] #51995 <!-- [Artifacts] Pass artifacts dictionary to
`ensure_artifact_installed` dispatch -->
- [x] #52098 <!-- Fix errors in `sort` docstring -->
- [x] #52136 <!-- Bump JuliaSyntax to 0.4.7 -->
- [x] #52140 <!-- Make c func `abspath` consistent on Windows. Fix
tracking path conversion. -->
- [x] #52009 <!-- fix completion that resulted in startpos of 0 for `\\
-->
- [x] #52192 <!-- cap the number of GC threads to number of cpu cores
-->
- [x] #52206 <!-- Make have_fma consistent between interpreter and
compiled -->
- [x] #52027 <!-- fix Unicode.julia_chartransform for Julia 1.10 -->
- [x] #52217 <!-- More helpful error message for empty `cpu_target` in
`Base.julia_cmd` -->
- [x] #51371 <!-- Memoize `cwstring` when used for env lookup /
modification on Windows -->
- [x] #52214 <!-- Turn Method Overwritten Error into a PrecompileError
-- turning off caching -->
- [x] #51895 <!-- Devdocs on fixing precompile hangs, take 2 -->
- [x] #51596 <!-- Reland "Don't mark nonlocal symbols as hidden"" -->
- [x] #51834 <!-- [REPLCompletions] allow symbol completions within
incomplete macrocall expression -->
- [x] #52010 <!-- Revert "Support sorting iterators (#46104)" -->
- [x] #51430 <!-- add support for async backtraces of Tasks on any
thread -->
- [x] #51471 <!-- Fix segfault if root task is NULL -->
- [x] #52194 <!-- Fix multiversioning issues caused by the parallel llvm
work -->
- [x] #51035 <!-- refactor GC scanning code to reflect jl_binding_t are
now first class -->
- [x] #52030 <!-- Bump Statistics -->
- [x] #52189 <!-- codegen: ensure i1 bool is widened to i8 before
storing -->
- [x] #52228 <!-- Widen diagonal var during `Type` unwrapping in
`instanceof_tfunc` -->
- [x] #52182 <!-- jitlayers: replace sharedbytes intern pool with one
that respects alignment -->

Contains multiple commits, manual intervention needed:
- [ ] #51092 <!-- inference: fix bad effects for recursion -->

Non-merged PRs with backport label:
- [ ] #52196 <!-- Fix creating custom log level macros -->
- [ ] #52170 <!-- fix invalidations related to `ismutable` -->
- [ ] #51479 <!-- prevent code loading from lookin in the versioned
environment when building Julia -->