Documentation needs to be combined into the manual. Currently, it can be
found in:

http://code.google.com/p/phc/wiki/CompilingPHP
./doc/license/README.license
README.test
README.svn
README.apache
README.test
README.profiling


There are additionally other bits of information strewn around the place,
where its not clear whats useful, or what to do with them:
comments in PHP tests
mailing list entries (not so much as that its not easy enough to look them
up though)
svn commit logs.