Unify clang/llvm attributes for asan/tsan/msan (LLVM part)

These are two related changes (one in llvm, one in clang).
LLVM: 
- rename address_safety => sanitize_address (the enum value is the same, so we preserve binary compatibility with old bitcode)
- rename thread_safety => sanitize_thread
- rename no_uninitialized_checks -> sanitize_memory

CLANG: 
- add __attribute__((no_sanitize_address)) as a synonym for __attribute__((no_address_safety_analysis))
- add __attribute__((no_sanitize_thread))
- add __attribute__((no_sanitize_memory))

for S in address thread memory
If -fsanitize=S is present and __attribute__((no_sanitize_S)) is not
set llvm attribute sanitize_S


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176075 91177308-0d34-0410-b5e6-96231b3b80d8

utils/llvm.grm

@@ -174,9 +174,9 @@ FuncAttr      ::= noreturn
  | sspreq
  | returns_twice
  | nonlazybind
- | address_safety
- | thread_safety
- | uninitialized_checks
+ | sanitize_address
+ | sanitize_thread
+ | sanitize_memory
  ;
 
 OptFuncAttrs  ::= + _ | OptFuncAttrs FuncAttr ;