snapshot-43

Forking, 16x16 icons

The most apparent change this time around are the new 16x16 document
icons.  Thanks to Nico Weber it is now actually possible to distinguish
the icons for different file types at this low resolution.  I think it
looks pretty awesome!

One thing of note is that the forking code has changed and this means
that the "f" flag is no longer supported in 'guioptions'.  In other
words, if you want to disable automatic forking when starting the GUI
from the Terminal then you have to pass "-f" on the command line.  I
hope nobody will be too upset about this.  The benefits of this change
are faster startup times (it's down to about 500 ms to open a new window
on my machine now) and the 'autochdir' option works properly.

Changes since snapshot 42:

  - Do inclusive search when opening files (Jonathon Mah)
  - Respect layout prefs when double-clicking an already open file
  - Fix two minor memory leaks
  - Ctrl-] works on German keyboard layout
  - The .viminfo file is written on Cmd-q
  - New 16x16 icons (Nico Weber)
  - Untitled window again opens on reopen event if requested in prefs
  - Fork earlier; fixes bug with 'autochdir', faster startup, "f" no
    longer supported in 'guioptions'
  - Some other minor bug fixes
  - Use latest runtime files and Vim patches