GrGLProgramStage Renaming Part 3

s/GLProgramStage/GLEffect
minor whitespace/spelling fixup

R=robertphillips@google.com
Review URL: https://codereview.appspot.com/6767054

git-svn-id: http://skia.googlecode.com/svn/trunk@6095 2bbb7eff-a529-9590-31e7-b0007b416f81
20 files changed