* include/bsp.h, start/start.S, startup/bspstart.c:
added CONFIGURE_MALLOC_BSP_SUPPORTS_SBRK in bsp.h.
removed BSP_INIT_STACK_SIZE in bsp.h -- it uses __stack defined
by the linker script (shared/startup/linkcmds) for the initial
stack.
replaced __rtems_end+4096 with __stack in start.S
Removed legacy code in bspstart.c (inherited from old mvme2307 BSP
but not relevant to this one) that tested trapping
into PPCBug.
Changed ConfVPD_buff[] to be static and added ReadConfVPD_buf() in
bspstart.c
* bootcard.c, bspgetworkarea.c, include/bootcard.h: Switch from ssize_t
to uintptr_t for bsp_get_work_area() since the work area is larger
than a single allocatable object.
* shared/startup/bspgetworkarea.c: Switch from ssize_t to uintptr_t for
bsp_get_work_area() since the work area is larger than a single
allocatable object.
* Makefile.am, configure.ac: Add shell of heap walk test for Santosh.
* heapwalk/.cvsignore, heapwalk/Makefile.am, heapwalk/heapwalk.scn,
heapwalk/init.c, heapwalk/system.h: New files.