multimedia/{lib}x264: Update to 0.144.2533 and major refactor

• Update to 0.144.2533 (from upstream stable branch) [1]
• Switch x264 and libx264 ports to master/slave ports respectively
• Bump PORTREVISION for dependent ports as the shared library version has changed.

multimedia/x264:

• Clean up and update "updating instructions" in Makefile header
• Tweak COMMENT
• Only LIB_DEPENDS on libx264 and add PLIST_FILES if this isn't the libx264 port.
• Allow COMMENT, USES, OPTIONS_*, CONFIGURE_ARGS to be overriden in libx264 port.
• Place common configure arguments in a CONFIGURE_COMMON_ARGS variable to make overriding values without duplication easier.
• Use --prefix configure argument over post-patch replacements
• Enable stripping of binaries and libraries if DEBUG is off. Remove post-install target STRIP_CMD accordingly.

• Delete patch-Makefile in favour of patching WRKSRC/configure to identify amd64, arm64 and mipsn32. powerpc and powerpc64 are now covered upstream without needing patches.

• Patch out a bogus compiler argument check (cc_check) that results in -Wno-maybe-uninitialized being added to CFLAGS causing causes warnings when clang is cc. The cc_check function checks for basename $CC to identify compiler type (icl, clang, gcc, etc).

multimedia/libx264:

• Remove all Makefile entries that are duplicated or common and found in the master port (x264).
• Set lib as the PKGNAMEPREFIX
• Tweak COMMENT
• Delete upstreamed ARM patches [1]
• Delete all but one patch, as they duplicate those in x264.
• Dont remove pkgconfig/libdata directory

Changes:

https://git.videolan.org/?p=x264.git;a=shortlog;h=refs/heads/stable

Based on:

PR: 201260 [1]
Submitted by: Andrey Cherkashin <andoriyu gmail com> [1]