fixes issue 837 + suppress deliberate racy uninit in tsan tests
fixes issue 837
+ suppress deliberate racy uninit in tsan tests

SVN-Revision: 804

sigma-random/drmemory,code4bones/drmemory,code4bones/drmemory,LohithBlaze/drmemory,LohithBlaze/drmemory,code4bones/drmemory,LohithBlaze/drmemory,sigma-random/drmemory,sigma-random/drmemory,sigma-random/drmemory,code4bones/drmemory,LohithBlaze/drmemory,sigma-random/drmemory,code4bones/drmemory,LohithBlaze/drmemory