Updated the LDAP SDK so that the next release will have a version
number of 7.0.4.  Also, update tests to ensure that we preserve
backward compatibility with the 7.0.3 release.

Updated the server set blacklist manager to improve debug logging in
the event that servers are added to or removed from the blacklist.
The round robin and fewest connections server sets can be configured
to use this blacklist manager to temporarily avoid attempting to
create connections to a server when health checking determines that
it's not in an acceptably usable state.

Improved performance and reduced contention when retrieving
environment variables from the JVM process.

Updated the PropertyManager class to make it possible to cache
property values for faster access with less contention.  Caching is
disabled by default, but you can enable it by specifying a maximum
cache duration.  Additional methods are provided to clear the cache,
and to populate the cache based on the currently defined system
properties and environment variables.

Added client-side support for a W3C trace context request control
that can be used to convey information for use in distributed tracing
(e.g., via OpenTelemetry).  This control was originally defined in
the ForgeRock Directory Server (now known as PingDS), and will also
be supported in the Ping Identity Directory Server.

Added a "discard results" search result listener that can be used in
cases where a search should be performed, but the actual contents of
any applicable search result entries or references are not needed.
The number of entries and references returned will still be
available in the search result.  For example, this may be useful for
testing purposes, if a search should be performed and you want to
verify the result and potentially the number of entries and/or
references returned, but you don't need to examine their contents.

Fixed a minor typo in files that describe the licenses under which
the LDAP SDK may be used.

Updated ServerSetBlacklistManager so that adding a server to the
blacklist will be debugged at a WARNING level rather than at the
INFO level.

Updated the documentation to include the latest revisions of
draft-bouchez-scram-mcf and draft-codere-ldapsyntax in the set of
LDAP-related specifications.