Log Message:
Update do libX11-1.1.2. Major changes include:
- fixed integer overflows [ patched before ]
- fixed file descriptor leak
- allow re-entrant Xlib calls from _XIOError for the sake of
  atexit handlers or ELF/C++ destructors
- define XTHREADLIB and XTHREAD_CFLAGS [ not perfect, but used for now ]
- Many constness and some 64bit issues fixed
- Added man apge for XKB

Add a NetBSD xsrc patch to unlock mutexes before destroying them.