Change bitmap scripts for two-color/two-font text labeling.

Change-Id: I4620966554ca26ea91b01e65fd441c9c09db2a83

BUG=chrome-os-parter:792
TEST=none

As with every previous change to the BIOS bitmaps, you'll have to
1) get a new factory-install shim with the bitmaps embedded
2) run the factory-install shim to change the screens on the device
3) boot in developer and/or recovery mode to see the screens

There is no direct test for this particular bug alone.

Review URL: http://codereview.chromium.org/4158003
6 files changed