.gitignore modified to add Windows build directories: build/Debug build/Purify build/Release
.gitignore modified to add Windows build directories:
build/Debug
build/Purify
build/Release

File sorted to fix previous inconsistencies.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/3165013

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@56458 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser