ia32: prepend CPUCap enum names and rdtsc with ia32 to avoid conflicts.
move all self tests into separate headers as required for Cxxtest.
adts: remove some dead code.
add CppDoc comments to debug, lib (with heavy cleanup), tex, tex_codec,
snd_mgr
slight improvements to path
tex: refactor; split out tex_decode and encode to allow self-test
This was SVN commit r3911.
