(llvm up) Use llvm::Triple for storing target triples.
 - This commit has some messy stuff in it to extend string lifetimes, but that
   will go away once we switch to using the enum'd Triple interfaces.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72243 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed