Autotuning work.
Merge branch 'master' of https://github.com/iskandr/parakeet

Conflicts:
	test_tiled_mm.py
Clang testing.
Merge branch 'master' of https://github.com/iskandr/parakeet

Conflicts:
	config.py
	lower_tiled_adverbs.py
	test_tiled_mm.py
Merge branch 'master' of https://github.com/iskandr/parakeet

Conflicts:
	config.py
	llvm_context.py
Added ability to run llvm bytecode compiled via llc in Parakeet runtime.
Perf work.
Merge branch 'master' of https://github.com/iskandr/parakeet

Conflicts:
	llvm_context.py
	pipeline.py
Merge branch 'master' of https://github.com/iskandr/parakeet

Conflicts:
	config.py
	llvm_context.py
	lower_structs.py