forked from Imagelibrary/rtems
* itron/include/rtems/itron/task.h, itron/src/del_tsk.c, itron/src/exd_tsk.c, itron/src/task.c, posix/include/rtems/posix/threadsup.h, posix/src/cancel.c, posix/src/cancelrun.c, posix/src/pthread.c, posix/src/pthreadexit.c, posix/src/setcancelstate.c, posix/src/setcanceltype.c, posix/src/testcancel.c, rtems/src/taskdelete.c, score/inline/rtems/score/object.inl, score/src/objectclose.c, score/src/threadclose.c: Make all task delete/exit/cancel routines follow the same critical section pattern. Also ensure that POSIX cancelation routines are run at thread exit.