Add cmxs to Makefile.simple

(thanks to @josch for the patch)
Closes #124
Small fix to the vim script

thanks to @trefis for the hint. Closes #120
Fixed record bug with multiple leading modules ({A.B.})
Added lwt test on nested 'try' (broken by fix to #93)

This can probably wait until I write the proper handling for syntax plugins,
that would make this much cleaner (for now, we just treat 'finally' as 'with',
and this case just proves it's not equivalent)
small doc update
Fixed small try..with bug
Handling 4.02 'match with exception' syntax

Closes #129