Re-Added files to a newer version of AMiRo-OS
Further fixes in aos_main.cpp
Serial print now works. Shell is not started though.
Re-added previously removed code in aos_shell.c (_printPrompt())
Integrated SSSP switch to all modules and core files. Warnings have to be dealt with at a later time
Added new module for stm32l476 board. Added files that are specific to the board from ChibiOS.
Introduced some basic stack introspection functionality to threads.According information is now given for the shell thread via the 'module:info' command.
replaced calls of 'currp' by the correct access function chThdGetSelfX()
Minor fixes and enhancements.
Minor optimizations regarding memory utilization.
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