…tu environment

…2 MSYS2

Restores the achievements of commit
fdcd1ef
vs. contents of Windows branch that split off from master before it.

…" braces

… select on child's pipefd, and later commits in the series

Committed-By: Jim Klimov <jimklimov+nut@gmail.com>

… non-WIN32 platforms

Very unsure if this is needed on WIN32 either, assuming callers of these methods know the difference and that they do work as advertised on the platform

…th()

… drivers anyway, should not conflict)

…ntivirus)

…IN32 (antivirus)

…ing [networkupstools#1477]

…" concatenation in format strings

Add MinGW spelling for a quote

… exit-code of upsd

… to check occupied ports are not available

…/net/tcp{,6} is usable and says port is free

…ld not be default

At least, it is likely the root cause of faults was the busy NUT_PORT
and not some missing content in the config file, after all.

…se variables for ARCHLESS-download and ARCH-build locations

…ds (typo fix)