* user/clock.t: Refactored rtems_clock_get into 5 methods which
are single purpose and more strongly typed. They are:
rtems_clock_get_tod - Get TOD in Classic API structure
rtems_clock_get_tod_timeval - Get TOD in struct timeval
rtems_clock_get_seconds_since_epoch - Get TOD as seconds since 1988
rtems_clock_get_ticks_since_boot - Get ticks since boot
rtems_clock_get_ticks_per_second - Get ticks per second
* 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.
* user/Makefile.am, user/clock.t: Add support for a handler to obtain
the number of nanoseconds since the last clock tick. The primary
interface for this is rtems_clock_set_nanoseconds_extension.
Subsequent commits from Joel will redo the TOD support to use this
capability.
* 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.
