Log Message:
macports-legacy-support: update to 1.4.0. Changes:

1.4.0:
Update copyright years
Multiple updates, mostly for realpath()
Multiple updates, mostly for stat() by @fhgwright in #105
Multiple changes (primarily cleanups)
Fixes for copyfile(), *statx() and TargetConditionals
Multiple fixes and new features
Add CPU_TYPE_ARM; update README

1.3.0:
Add implementation and tests for stpncpy() security wrapper
Many updates - primarily header-related
Cleanups and a few minor bugfixes
Mostly SDK-related changes, including __DARWIN_C_LEVEL stuff
Add two new queue macros with tests, plus a warning fix
Add fgetattrlist()

Tested on Sequoia/aarch64 and Tiger/powerpc.