--HG--
extra : transplant_source : %25%1F%900q%0E%B6%1F%20%00%E2%7E%1A%E4%0F%91%E2%BE%96%82

-- Make a pass at cleaning up contrib/ Makefile.am files
-- Rename many AM_CONDITIONALS for consistency and give them better names to
   better indicate what they mean
-- Remove some dead input plugin tests
-- Clean up AM_PATH_DVDNAV

-- Removed m4/optimizations.m4, and along with it, AC_OPTIMIZATIONS.
-- Stripped down, cleaned up, and merged the former together with other compiler
   characteristic checks.
-- Do not set any optimization flags into CFLAGS.  Update all Makefile.am's with
   proper AM_CFLAGS, AM_CPPFLAGS, AM_LDFLAGS, etc. to set up optimization flags,
   usually from DEFAULT_OCFLAGS.
-- Start cleaning up CFLAGS/CPPFLAGS stuff in Makefile.am's all over the place.
-- Correct a number of places where CFLAGS itself was being mangled in
   Makefile to on-the-fly adjust optimizations to work around compiler bugs.
   This stuff is now done correctly.
-- The run of automake from autogen.sh is now clean of warnings.
-- Cleaned out some (now) dead macros from m4/_xine.m4
-- Mac OS X intel builds out-of-the-box now -- dropped optimization on
   post/deinterlace/plugins/kdetv-greedyh to O1_CFLAGS.
-- OBJCFLAGS is now getting set correctly everywhere that it needs to be
-- Various other miscellaneous cleanups all over

Contestually, move libmpcdec code in contrib/libmpcdec, so that it's not mixed together with xine code.

The use of MUSEPACK_LIBS/MUSEPACK_CFLAGS intermediate is to make simpler move to pkg-config checks if libmpcdec developers decide to install one.