Revert "fix memmove my implementation"
Revert "fix memmove my implementation"

This reverts commit 9e1ccc345fcdea782be986efb46236de9f791472, which appears
to be broken (see issue #24).

Conflicts:
	libc/string.c

Jonimoose/libfxcg,Forty-Bot/libfxcg,Forty-Bot/libfxcg,Forty-Bot/libfxcg,Jonimoose/libfxcg,Forty-Bot/libfxcg,Jonimoose/libfxcg