* include/bsp.h (Clear_tm27_intr): Stop the timer and disable
the interrupt. This was not quite right before and we were
getting uncontrolled interrupt nesting in tm27.
* timer/timer.c (Timer_Initialize): Added an extra reset and
changed the ITMR register so we will never get an interrupt.
(Read_timer): Fixed so the timer actually stops before it
is read. Before some times reported were outraguously high.
* start/start.S: Major clean including using stack in linkcmds,
deleting unused code, and zeroing the BSS using the linkcmds
information.
* startup/linkcmds: Put heap in lower memory than workspace
and move _clear_end so both are zeroed.
* include/bsp.h, timer/timer.c: Updated so timer appears to
work and support tm27. I would prefer to time a software
interrupt rather than an use an extra timer though.
