Minor changes to hierarchical view of data deps
Merge branch 'master' into debugger
(i) More SourceContext fixes (ii) Bug fix for profiling
Adding visualizer options to view data for individual tic-toc regions
SourceContext fixes
Reducing profiling overhead in delite
Merge pull request #26 from stanford-ppl/debugger

SourceContext fixes and profiler optimizations
updat refs
Merge remote-tracking branch 'origin/master' into cpp-fix