Summary:
The MPEG transport stream file format also uses ".ts" as its file extension.
This change detects its specific framing format (0x47 every 189 bytes) and
simply ignores MPEG TS files.

Reviewers: djasper, sammccall

Subscribers: klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D29186

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@293270 91177308-0d34-0410-b5e6-96231b3b80d8