Improved clang-format integration support for diagnostic messages output

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@172072 91177308-0d34-0410-b5e6-96231b3b80d8
Removing loop-convert tool

cpp11-migrate now contains the loop convert transform code and tests.
Cleaning up the old code/tests and updating build system files as
necessary.

Reviewers: klimek



git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@172074 91177308-0d34-0410-b5e6-96231b3b80d8
Format what you can when errors are found

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@172075 91177308-0d34-0410-b5e6-96231b3b80d8