[OS] Module names renamed to be more concise.
[OS] LIBC - Added many basic library function from linux.
[BUILD] Garbage-collect unused functions and data!
[CONFIG] Added initial set of Kconfig files.
[CONFIG] Added a top-level Makefile to compile configured BSP.
[CONFIG] Added mkconfig from Gregory Nutt, to compile configuration header file.
[DBUILD] Fix compatibility with Kconfig
[CONFIG] Added source-level compatibility for Kconfig.