snapshot-22

Replaces snapshot 21

Nico Weber managed to track down the bug which caused snapshot 21 to
bring OS X to its knees, so I have merged this patch and uploaded a new
snapshot.  From now on I will also hold updating the Appcast for a day
or two to avoid bad builds to spread too quickly.  That means you will
have to go to

http://code.google.com/p/macvim/

and download the new snapshot manually, or wait for a day or two.  Of
course, I rely on the fact that some of you will actually download it
and test it before I update the Appcast (and reply to this post letting
me know that the build look OK).

The most exciting new addition in this snapshot is support for <D-g>.
It repeats the last search you made in any other application (that
supports the Find Pasteboard).  This is very useful if you have several
windows open in MacVim...try searching for something in one window
(using "/"), then switching to another window and hitting <D-g> to see
what I mean (after having pressed <D-g> once you can of course use "n"
to repeat the search).  See ":h macvim-find" for more info.  (This
feature was requested by Eric Wing...thanks Eric for that...I'd never
used <D-g> before!)

Here is a condensed list of changes (since snapshot 20):
- Fix forking bug which caused snapshot 21 to lock up OS X
- The macvim color scheme changed so that line numbers look better when
  the background is dark (enable line numbers with :set number, set dark
  background with :set bg=dark)
- Improved support for Voice Over (enable with <D-F5>)
- System bell support (see :h 'vb' on how to turn it off)
- MacVim no longer associates to .plist and .dict since these may well
  be in binary format
- Added Find Next <D-g>, Find Previous <D-G> and Use Selection for Find
  <D-e> menu items
- Track pad scrolling is now force sensitive
- Added help section on preferences
- Preferences panel updated (also no longer hides when MacVim loses
  focus)