Cleanup: moved a few files into docs, the amount of text files in root was getting abit, bleh to keep looking at, also some other minor cleanup in Cmake,
getting a weird error message now that I've updated to 2.8.12.1, i'll look more into the cause after a abit.

for teh new developers seeking this info,
you'll find the moved text files at these locations:

code_standards.md -> doc
THANKS.md -> doc
COPYING.md -> doc

Signed-off-by: Bootz <bootz@projectskyfire.org>