Adding original Berkeley YACC code, fetched from
http://invisible-island.net/byacc/byacc.html on Nov 21, 2014.
Progress on porting zlib to Rust - super messy, nowhere close to working
zlib is mostly working...  mostly.
Lots of good progress on Rust zlib port
Merge branch 'master' of https://github.com/sivadeilra/rustports