* testsuite/thread/pthread5.cc: Include <unistd.h>
if _GLIBCPP_HAVE_UNISTD_H is defined.
(main): Only use pthread_attr_setscope if
_POSIX_THREAD_PRIORITY_SCHEDULING is defined.
From-SVN: r58608
* testsuite/thread/pthread1.cc: New test.
* testsuite/thread/pthread2.cc: New test adapted from libstdc++/5347.
* testsuite/thread/pthread3.cc: Likewise.
* testsuite/thread/pthread4.cc: New test adapted from
http://gcc.gnu.org/ml/gcc-bugs/2002-01/msg00679.html
* testsuite/thread/pthread5.cc: New test adapted from libstdc++/5464.
* testsuite/thread/pthread6.cc: New test adapted from libstdc++/5444.
From-SVN: r49173