Mark3 RTOS Source

Lots of good stuff in this change.
-- Modified code again to favor size-over-speed for blocking object implementation, shaving several hundred bytes of code space
-- Added new option to all for timeout-based APIs to be enabled separately from timers
-- Fixed timer option so that the kernel builds correctly without it
-- Modified some unit test parameters to relax timing constraints that aren't valid for tick-based timers
-- Updated the profiling scripts for new objects
-- Size-over-speed optimization to kernel_aware module to szve on code space
-- tracebuffer/writebuffer now only compiled-in when kernel-trace is used

Changing defaults such that TRACE macros get preprocessed out unless
KERNEL_USE_DEBUG is defined -- even if KERNEL_AWARE_SIMULATION is
defined.

Thought a bit more carefully about how the kernel-aware simulation functionlity should be written, and thought it would be better served by being integrated into the kernel itself.
Removing the proof-of-concept code from the unit test folder.

Adding kernel-aware profiling functions, supported by flAVR.

Adding Mark3 copyright to fixed-point lib

Checking in a decimal/binary fixed-point lib. Not thoroughly printed yet.

Backporting build and profiling script improvements from R1 back to trunk.

Adding arduino-specific types

Fixing a bunch of the scripts to add size profiling, manage mixed text/binary data, and deal with flavr-based simulation (vs. simavr)

-Backporting tickless timer fix to R1 from R2