HAVE_PTHREAD_COND_TIMEDWAIT_RELATIVE has never been defined for LP64,
so let's have everyone use the same code path.
Also fix the possible overflow.
Bug: http://b/26944282
Bug: http://b/27918161
Change-Id: I51fc0ebb1f6b860dc62d721f8ebfbcf724ce66e7
AndroidDefs.h - C/C++ enums and types
Mutex.h - Mutex class declaration
Condition.h - Condition class declaration
RWLock.h - RWLock class declaration
Thread.h - Thread class declaration
AndroidThreads.h - low-level thread creation functions
threads.h - includes all the above for backward source compatibility
Change-Id: Ia2f80c175333b59a41d1720985810bb2346e94cb
Note: implementations are still in Threads.cpp