Full conversion to standalone project + travis fixup#3

Merged

AlexeySotkin merged 2 commits intoKhronosGroup:masterfrom karolherbst:travis

Apr 16, 2018

+207-62

Commits on Apr 13, 2018

cmake: rework to be able to build outside LLVM
karolherbst
committed

Commits on Apr 16, 2018

travis: make it build again
karolherbst
committed