[include-fixer] Also output the location where we found an unknown identifier.
[include-fixer] Also output the location where we found an unknown identifier.

For debugging only, makes it a bit easier when there are queries coming
out of headers.

git-svn-id: a34e9779ed74578ad5922b3306b3d80a0c825546@269194 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/clang-tools-extra,llvm-mirror/clang-tools-extra,llvm-mirror/clang-tools-extra,llvm-mirror/clang-tools-extra