roll gyp 1501:1507

r1503 Ensure that all entries in .sln files are sorted.
r1504 Adding a test to cover XCode UID collisions.
r1505 Allow library entries of the form '-lfoo' on MSVS.
r1506 Correct dump_dependency_json on windows.
r1507 make: drop all system tests

R=thakis@chromium.org
BUG=


Review URL: https://chromiumcodereview.appspot.com/10987051

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@158862 0039d316-1c4b-4281-b951-d872f2087c98