Modifications made by clang-tidy with minor tweaks.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@215557 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@200845 91177308-0d34-0410-b5e6-96231b3b80d8

Summary: This is a Clang part of http://llvm-reviews.chandlerc.com/D1534

Reviewers: jordan_rose, klimek, rsmith

Reviewed By: rsmith

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D1535

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189583 91177308-0d34-0410-b5e6-96231b3b80d8

Use isCharInSet from llvm/Support/UnicodeCharRanges.h, added a test for double-width characters in FixIt-hints.

Summary: This is a follow-up to r187837.

Reviewers: gribozavr, jordan_rose

Reviewed By: jordan_rose

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D1306

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188056 91177308-0d34-0410-b5e6-96231b3b80d8

Add warnings under -Wc++11-compat, -Wc++98-compat, and -Wc99-compat when a
particular UCN is incompatible with a different standard, and -Wunicode when
a UCN refers to a surrogate character in C++03.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@174788 91177308-0d34-0410-b5e6-96231b3b80d8