* psim-bottom, psim-gdb-bottom, psim-shared, psim-top.in: Add ability
to force psim configuration to include System V IPC devices even when
the test does not appear to be multiprocessing. This is used by some
RTEMS application developers for system simulation and could be used
to simulate a framebuffer if a UNIX process mirrored the buffer.
* Makefile.am, configure.ac: Rework psim scripts to share code for
creating device trees and actually running the tests. Overhaul the
device tree generated to always include a block of Flash and a
Real-Time Clock. When running MP tests enable the shared memory and
semaphore devices.
* psim-bottom, psim-gdb-bottom, psim-gdb-top.in, psim-shared,
psim-top.in, runtest-bottom, runtest-top.in: New files.
* psim, psim-gdb, runtest: Removed.
