* lib/racc: Merge Racc documentation downstream, add grammar ref file
* lib/racc: Merge Racc documentation downstream, add grammar ref file

git-svn-id: ab86ecd26fe50a6a239cacb71380e346f71cee7d@39050 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

tenderlove/racc,tenderlove/racc,tenderlove/racc,tenderlove/racc,tenderlove/racc