This is used for C11 and OpenCL atomics.
Fixes cursor errors similar to:
kdevelop.plugins.clang: Unhandled type: Atomic _Atomic(char)
kdevelop.plugins.clang: Unhandled type: Atomic _Atomic(signed char)
kdevelop.plugins.clang: Unhandled type: Atomic _Atomic(unsigned char)
kdevelop.plugins.clang: Unhandled type: Atomic _Atomic(short)