(code refactoring)
* extra/gc.c: Move include malloc.c to be near include mallocx.c.
#include "../checksums.c"
#include "../gcj_mlc.c"
#include "../headers.c"
-#include "../malloc.c"
#include "../new_hblk.c"
#include "../obj_map.c"
#include "../ptr_chck.c"
#include "../dbg_mlc.c"
#include "../finalize.c"
#include "../fnlz_mlc.c"
+#include "../malloc.c"
#include "../mallocx.c"
#include "../mark.c"
#include "../mark_rts.c"