* libmisc/xgetXXbyYY.c, libmisc/myname.c, libmisc/getgr_nam_gid.c,

	* libmisc/xgetXXbyYY.c, libmisc/myname.c, libmisc/getgr_nam_gid.c,
	libmisc/salt.c, libmisc/list.c, libmisc/cleanup.c, src/login.c,
	lib/getdef.h, lib/groupio.c, lib/getlong.c, lib/gshadow_.h,
	lib/sgroupio.c, lib/shadowio.c, lib/pwio.c, lib/commonio.h,
	lib/fputsx.c, lib/prototypes.h: Added splint annotations.
	* lib/groupio.c: Avoid implicit conversion of pointers to
	booleans.
	* lib/groupio.c: Free allocated buffers in case of failure.