Revert "Include stddef.h before including cxxabi.h" to un-break buildbot

This reverts commit r220665.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220667 91177308-0d34-0410-b5e6-96231b3b80d8
Fix unicode chars into ascii in comment lines.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220668 91177308-0d34-0410-b5e6-96231b3b80d8
Re-commit r220667.

C++ source given to check_cxx_source_compile should have define "main".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220669 91177308-0d34-0410-b5e6-96231b3b80d8
[asan-asm-instrumentation] Added comment describing how asm instrumentation works.

Summary: [asan-asm-instrumentation] Added comment describing how asm instrumentation works.

Reviewers: eugenis

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D5970

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220670 91177308-0d34-0410-b5e6-96231b3b80d8