BZ#15086: Fix res_debug printing of options

	[BZ# 15086]
	* resolv/res_debug.c (p_option): Handle RES_NOALIASES,
	RES_KEEPTSIG, RES_BLAST, RES_NOIP6DOTINT, RES_SNGLKUP,
	RES_SNGLKUPREOP.
BZ#15380: Fix initstate error return

	[BZ #15380]
	* stdlib/random.c (__initstate): Return NULL if
	__initstate fails.
BZ#15085: Fix comments/strings for RES_NOCHECKNAME

	[BZ #15085]
	* resolv/resolv.h (RES_NOCHECKNAME): Mark as unimplemented.
	* resolv/res_debug.c (p_option): Mark RES_NOCHECKNAME as
	unimplemented.
BZ#15084: Apparent typos in strings in res_debug.c

	[BZ #15084]
	* resolv/res_debug.c (p_option): Fix strings for RES_USEBSTRING
	and RES_USEVC.