WebKitTools:
Reviewed by darin.
http://bugzilla.opendarwin.org/show_bug.cgi?id=9395
Make prepare-ChangeLog faster
* Scripts/prepare-ChangeLog: Use "svn diff" instead of "svn stat" to find changed files,
then save the diff output for reuse. Keep a status variable if changes are made to
LayoutTests so "svn diff LayoutTests" doesn't have to be run to check for changes when
WebCore is updated. Added -h|--help command-line switch and help message. Move test
for no changed files closer to the beginning of the program.
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@14814
268f45cc-cd09-0410-ab3c-
d52691b4dbfc