* user/bsp.t, user/conf.t, user/task.t: Add ability for application to
configure minimum stack size. Add RTEMS_CONFIGURED_MINIMUM_STACK_SIZE
constant so user can clearly indicate they want the configured as
opposed to the recommended minimum stack size.
* user/bsp.t, user/conf.t, user/init.t, user/intr.t, user/overview.t,
user/timer.t: Correct default values. Make it clear that confdefs.h
calculates the memory required for you.
* SUPPORT, LICENSE: New files.
* Numerous files touched as part of merging the 4.5 branch
onto the mainline development trunk and ensuring that the
script that cuts snapshots and releases works on the documentation.