2013-11-18 Sahil Patnayakuni <sahilp@oarcorp.com>

2013-11-18  Sahil Patnayakuni  <sahilp@oarcorp.com>

	* libc/include/stdlib.h, libc/stdlib/mbstowcs.c,
	libc/stdlib/mbstowcs_r.c, libc/stdlib/mbtowc.c,
	libc/stdlib/mbtowc_r.c, libc/stdlib/strtod.c,
	libc/stdlib/strtol.c, libc/stdlib/strtold.c,
	libc/stdlib/strtoll.c, libc/stdlib/strtoll_r.c,
	libc/stdlib/strtoul.c, libc/stdlib/strtoull.c,
	libc/stdlib/strtoull_r.c, libc/stdlib/wcstombs.c,
	libc/stdlib/wcstombs_r.c: Add restrict keyword.