[objcmt] Rewrite messages to NSString's stringWithUTF8String:/stringWithCString:
to use the @() boxing syntax.

It will also rewrite uses of stringWithCString:encoding: where the encoding that is
used is NSASCIIStringEncoding or NSUTF8StringEncoding.

rdar://11438360

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156868 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed