SASHIMI-379 - Ensure blocks containing only block_comments are handled
Merge branch 'feature/extend-support' of https://github.com/DealerDotCom/libsass into feature/extend-support
Merge remote-tracking branch 'origin/feature/perf-integration' into feature/extend-support
Updated printSourcesSet to print a more useful string representation without ampersands for leading selector references in Complex_Selectors. Add some useful debugging output to trim. Commented out some debug output in extendCompoundSelector that is useful, but shouldn't be on by default. You should be able to turn on EXTEND_COMPLEX and EXTEND_COMPOUND debugging levels and get useful output that helps determine which part of the algorithm the bug is in.
Fixing bug with sources. Clearing them since the ruby code doesn't have any to begin with. I'd still like to debug and try and figure out why we do.
Added comment saying why clearSources was needed.
Commenting out debug prints that shouldn't be on by default.