[analyzer] NFC: Run many existing C++ tests with a custom operator new().

[analyzer] NFC: Run many existing C++ tests with a custom operator new().

In order to provide more test coverage for inlined operator new(), add more
run-lines to existing test cases, which would trigger our fake header
to provide a body for operator new(). Most of the code should still behave
reasonably. When behavior intentionally changes, #ifs are provided.

Differential Revision: https://reviews.llvm.org/D42221

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@323376 91177308-0d34-0410-b5e6-96231b3b80d8