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

lib/AsmParser/LLLexer.cpp

@@ -562,7 +562,6 @@ lltok::Kind LLLexer::LexIdentifier() {
 
   KEYWORD(attributes);
 
-  KEYWORD(address_safety);
   KEYWORD(alwaysinline);
   KEYWORD(byval);
   KEYWORD(inlinehint);
@@ -589,8 +588,9 @@ lltok::Kind LLLexer::LexIdentifier() {
   KEYWORD(ssp);
   KEYWORD(sspreq);
   KEYWORD(sspstrong);
-  KEYWORD(thread_safety);
-  KEYWORD(uninitialized_checks);
+  KEYWORD(sanitize_address);
+  KEYWORD(sanitize_thread);
+  KEYWORD(sanitize_memory);
   KEYWORD(uwtable);
   KEYWORD(zeroext);