shadow: adopt here

Signed-off-by: Steven Barth <steven@midlink.org>

utils/shadow/patches/001-busybox_ash.patch

@@ -0,0 +1,13 @@
+diff --git a/etc/login.defs b/etc/login.defs
+index 5b6fab3..79eeccf 100644
+--- a/etc/login.defs
++++ b/etc/login.defs
+@@ -111,7 +111,7 @@ NOLOGINS_FILE	/etc/nologin
+ # command is "-su".  If not defined, then "ps" would display the
+ # name of the shell actually being run, e.g. something like "-sh".
+ #
+-SU_NAME		su
++#SU_NAME		su
+ 
+ #
+ # *REQUIRED*

utils/shadow/patches/002-disable-ruser-lookup.patch

@@ -0,0 +1,10 @@
+--- a/configure.in
++++ b/configure.in
+@@ -195,7 +195,6 @@ AC_DEFINE_UNQUOTED(PASSWD_PROGRAM, "$sha
+ dnl XXX - quick hack, should disappear before anyone notices :).
+ AC_DEFINE(USE_SYSLOG, 1, [Define to use syslog().])
+ AC_DEFINE(RLOGIN, 1, [Define if login should support the -r flag for rlogind.])
+-AC_DEFINE(RUSEROK, 0, [Define to the ruserok() "success" return value (0 or 1).])
+ 
+ AC_ARG_ENABLE(shadowgrp,
+ 	[AC_HELP_STRING([--enable-shadowgrp], [enable shadow group support @<:@default=yes@:>@])],