Move to newer clang annotations

Also enable -Wthread-safety-negative.

Changes:
Switch to capabilities and negative capabilities.

Future work:
Use capabilities to implement uninterruptible annotations to work
with AssertNoThreadSuspension.

Bug: 20072211

Change-Id: I42fcbe0300d98a831c89d1eff3ecd5a7e99ebf33
diff --git a/runtime/jdwp/jdwp_main.cc b/runtime/jdwp/jdwp_main.cc
index 6bc5e27..260abe7 100644
--- a/runtime/jdwp/jdwp_main.cc
+++ b/runtime/jdwp/jdwp_main.cc
@@ -256,12 +256,12 @@
     default:
       LOG(FATAL) << "Unknown transport: " << options->transport;
   }
-
   {
     /*
      * Grab a mutex before starting the thread.  This ensures they
      * won't signal the cond var before we're waiting.
      */
+    state->thread_start_lock_.AssertNotHeld(self);
     MutexLock thread_start_locker(self, state->thread_start_lock_);
 
     /*