linux: compiler_version.py tweak to work on gcc 4.4
linux: compiler_version.py tweak to work on gcc 4.4

The regex didn't work for GCC = 4.4.

Review URL: http://codereview.chromium.org/341085

git-svn-id: http://src.chromium.org/svn/trunk/src@30847 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: fe5575ae24c09323dc258cd8e017a2648697a80b
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser