[MacPorts] #69867: legacy-support headers should work with later SDK versions

[MacPorts]

#69867: legacy-support headers should work with later SDK versions
-----------------------------+-----------------------
  Reporter:  fhgwright       |      Owner:  fhgwright
      Type:  defect          |     Status:  assigned
  Priority:  Low             |  Milestone:
 Component:  ports           |    Version:  2.9.3
Resolution:                  |   Keywords:
      Port:  legacy-support  |
-----------------------------+-----------------------

Comment (by fhgwright):

 In [changeset:"b6f68a5633ce1b124d98d54056af589909c60c6e/macports-legacy-
 support" b6f68a5633ce1b124d98d54056af589909c60c6e/macports-legacy-support]
 (master):
 {{{
 #!ConfigurableCommitTicketReference repository="macports-legacy-support"
 revision="b6f68a5633ce1b124d98d54056af589909c60c6e"
 Convert most remaining feature flags to new scheme.

 Also corrects misnamed feature flag for lchmod().

 Also removes unnecessary feature flags for AI_NUMERICSERV and
 PTHREAD_RWLOCK_*.

 Also removes unnecessary #includes where not needed for unnecessary
 feature flags.

 Also renames guard macro in dirfuncs_compat.h to avoid confusion with
 feature flags.

 Re: https://trac.macports.org/ticket/69867

 TESTED:
 Builds and passes tests on all platforms, including with allowable
 mismatched SDK cases.
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/69867#comment:17>
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