Two modifications:
1. The addition of 2013 to the copyright year range for every file;
2. The use of a single year range, instead of potentially multiple
year ranges, as approved by the FSF.
* gdb.threads/watchthreads-reorder.c (gdbstop_mutex): Remove.
(thread1_func): Protect thread1_tid with thread1_tid_cond by
thread1_tid_mutex. Remove gdbstop_mutex handling.
(thread2_func): Protect thread2_tid with thread2_tid_cond by
thread2_tid_mutex. Remove gdbstop_mutex handling.
(main): Move thread1_tid_mutex and thread2_tid_mutex locks before
pthread_create. Remove gdbstop_mutex handling. New comment. Replace
pthread_cond_wait conditionalizations by while loops.
