AtomicExpr: make ASTStmtReader a friend and remove setters. Also fix saving
of an uninitialized Stmt* in serialization of __atomic_init and add a test of
atomics serialization.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154448 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed