test_libFLAC/md5.c: Add tests for MD5 calculation.
test_libFLAC/md5.c: Add tests for MD5 calculation.

Test all channel counts from 1 to 8 inclusive and all byte widths
from 1 to 4 inclusive.

waitman/flac,waitman/flac,waitman/flac,waitman/flac,waitman/flac