Fix typos

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@210328 91177308-0d34-0410-b5e6-96231b3b80d8
Adding a new #pragma for the vectorize and interleave optimization hints.

Patch thanks to Tyler Nowicki!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@210330 91177308-0d34-0410-b5e6-96231b3b80d8