Added detection for the new M (aka MUMPS) language.
Improved M detection to be more specific.
Use Common Lisp lexer for M syntax highlighting, which gives pretty good results.
Improved comment.
Fixed M lexer name.  Merged with upstream's latest changes.
Merged with upstream.  Updated M (aka MUMPS) detection to use the new bayesian / samples method.
Merge pull request #150 from lparenteau/master

Add detection for the M programming language (aka MUMPS).
Update samples
Merge pull request #448 from github/update-db

Update samples
Add PDF detection
Merge pull request #451 from github/pdfs

Add PDF detection