create GYP files for these targets: tests, gm, skhello, skimage, skdiff
see http://codereview.appspot.com/4536096/



git-svn-id: http://skia.googlecode.com/svn/trunk/gyp@1479 2bbb7eff-a529-9590-31e7-b0007b416f81
8 files changed