Makefile and README.txt updated.
updated all file headers to 2019
modified all relevant makefiles to adopt the new file structure
PHONY added to relevant Makefiles
1) enhancements of the makefiles: - replaced all absolute paths by relative paths - include directories now consistently do not have a trailing slash - it is now possible to specify a custom build directory by setting the BUILDDIR variable - updated C/C++ standard to C11 and C17 respectively (igrnore warnings caused by ChibiOS for now)...
slightly enhanced some of the makefiles
Major overhaul to AMiRo-OS version 2.0.0