c/recover_segfault: implement "rep movsb" for x86-32
c/recover_segfault: implement "rep movsb" for x86-32

This is used by "gcc -m32" on Debian 8 Jessie (x86).

fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared