Capitalize "Ruby" in comments

A user came through and capitalized all instances of "ruby" as that's
not the proper way to do things.  Since the commit came from the ruby
repository it did not update the kpeg files (which are not included
there).

If the literals parsers are rebuilt in the future, now the "Ruby" fix
won't regress.
Regenerate literals with updated kpeg

This kpeg does not emit trailing whitespace which will prevent nobu from
getting free commits when he cleans up whitespace in ruby trunk.