Doxygen file documentation and modules.
Introduced an mechanism to measure clock skew during operation phase, if AMIROOS_CFG_PROFILE is enabled (non-master modules only).The low-pass filtered skew is printed via the module:info shell command.
Introduced SSSP stage 3 of the startup phase (module stack initialization).
Several enhancements to memory structure, naming and code quality.AMiRo-OS is now prepared so the SSSP startup stage 3 (module stack initialization can be implemented).
prepended several macros with the 'AOS_' prefix
moved the /os/modles directory to /modules