src/libFLAC/memory.c : Wrap inclusion of <stdint.h> in #ifdef.

Lack of the #ifdef was causing problems on VS2008.
replaygain_synthesis.h : Fix FLAC_SHARE__MAX_SUPPORTED_CHANNELS.

Was previously hard coded as 2 when it should be FLAC__MAX_CHANNELS.

Patch-from: lvqcl <lvqcl.mail@gmail.com>
libFLAC/ : Refactoring and add comments.

Patch-from: lvqcl <lvqcl.mail@gmail.com>
Purge src/monkeys_audio_utilities/ tree.

Monkey's Audio Utilities seem to have been dead for some time.
Remove Monkey's Audio from FLAC.sln.

Patch-from: lvqcl <lvqcl.mail@gmail.com>