* add LLVM license info to files header
* Add LLVM license info to files header
* Add LLVM license info to files header
* Add LLVM license info to file headers
* Revert "Add LLVM license info to files header"
This reverts commit 22869676ad.
* Add LLVM license info to file headers
* run git-clang-format
* add missing file descriptions
* run git clang-format
* Add LLVM license info to file headers
* Add LLVM license info to files header