[clang-tidy] Check for dynamically initialized statics in headers.

Finds instances where variables with static storage are initialized dynamically in header files.

Reviewed By: aaron.ballman, alexfh

Patch by Charles Zhang!

Differential Revision: https://reviews.llvm.org/D62829

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@369568 91177308-0d34-0410-b5e6-96231b3b80d8
8 files changed