Merging startup optimization into trunk from branches/opt_imgs_and_startup@538.  Had to hand-merge several things.

Patch by: jgw
          me
Review by: me


git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@539 8db76d5a-ed1c-0410-87a9-c151d255dfc7
24 files changed