memmove: smaller one for i386, with added testing, and with  added check for src == dest. run tested.
memmove: smaller one for i386, with added testing, and with
 added check for src == dest. run tested.

    text           data     bss     dec     hex filename
-     39              0       0      39      27 libc/string/i386/memmove.os
+     37              0       0      37      25 libc/string/i386/memmove.os


joel-porquet/tsar-uclibc,joel-porquet/tsar-uclibc,joel-porquet/tsar-uclibc,joel-porquet/tsar-uclibc