Initial use of GIT. Had to reconfigure JavaCC for new project.

A few .ll files were mistakenly not under SVN version control.  Added
these manually.

Updated .gitignore to ignore .meta, .ll, and .exe files, except for
Linux.ll, Main.ll, NoArguments.ll, Unwind32.ll, Unwind64.ll, Windows.ll,
and any .native.ll files which contain native LLVM implementations of
methods.