[patch] matchit.vim should respect 'mps'

[Ken Takata]

Hi list and Benji,

The matchit plugin doesn't respect the 'matchpairs' option sometimes.
E.g. When editing an html file, cannot jump between a pair of parentheses
with %.

Attached patch fixes the problem. The basic idea is came from tmhedberg's
fix (https://github.com/tmhedberg/matchit), but I changed it slightly to cache
some more patterns.

Regards,
Ken Takata

[Ken Takata]

Hi list and Benji,

I have updated the patch for 7.4.1649.
Just changed the pathname.

Regards,
Ken Takata