[sanitizer] Add missing file comment.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@197807 91177308-0d34-0410-b5e6-96231b3b80d8
[sanitizer] Use the new sanitizer_interception.h header in all interceptors.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@197808 91177308-0d34-0410-b5e6-96231b3b80d8
[msan] Add missing visibility attribute to MSan new/delete interceptors.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@197809 91177308-0d34-0410-b5e6-96231b3b80d8