Vim: tone down CommandTMaxFiles change
Vim: tone down CommandTMaxFiles change

Commit 48d64fcd0d5d236 removed all restrictions, but after using it for
a day it's a little too much. 30 seems a reasonable compromise.

Signed-off-by: Wincent Colaiuta <c76ac2e9cd86441713c7dfae92c451f3e6d17fdc@wincent.com>

wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent