* user/barrier.t, user/clock.t, user/concepts.t, user/cpuuse.t,
user/init.t, user/intr.t, user/io.t, user/mp.t, user/rtmon.t,
user/sem.t, user/stackchk.t, user/task.t, user/timer.t: Updated the
Ada documentation to reflect the current binding.
* new_chapters/Makefile.am, user/Makefile.am, user/c_user.texi,
user/dirstat.texi, user/task.t: Move stack to first class citizen
status. Include it in User Manual and rename to start with rtems_.
* user/stackchk.t: New file.
* new_chapters/stackchk.t: Removed.
