Add xhprof_frame_begin & xhprof_frame_end#52

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bd808 wants to merge 3 commits intophacility:masterfrom bd808:issue/51

+434-18

Commits on Nov 28, 2014

Add xhprof_frame_begin & xhprof_frame_end
bd808
committed

Commits on Nov 29, 2014

Fix linebreaks in xhprof_frame tests
bd808
committed

Commits on Jan 2, 2015

Fix typo in xhprof_frame_* tests
bd808
committed