Use the CCache.html docs instead of the ccache-swig man page. The yodl2man and yodl2html tools are no longer used and so SWIG no longer has a dependency on these packages which were required when building from git. Closes #286 Closes #128
http://docs.travis-ci.com/user/multi-os/ Expand testflags.py to support clang vs gcc, as clang is used on OS X.