Fix DDMS lock ordering error.

Renamed kJdwpSerialLock to guard both the jdwp socket and serial.
Moved the lock priority higher than the alloc space lock priority.
This is needed since walking the dlmalloc heap requires acquiring
the alloc space lock.

Change-Id: Idce47ea8c400643829edc5aaebb57f8b686b2853
diff --git a/src/locks.h b/src/locks.h
index 202fa02..91437e1 100644
--- a/src/locks.h
+++ b/src/locks.h
@@ -36,9 +36,9 @@
   kUnexpectedSignalLock,
   kThreadSuspendCountLock,
   kAbortLock,
+  kJdwpSerialSocketLock,
   kAllocSpaceLock,
   kDefaultMutexLevel,
-  kJdwpSerialLock,
   kMarkSweepLargeObjectLock,
   kPinTableLock,
   kLoadLibraryLock,