testing/shadow: add debug build

2 patches from gentoo were also added

the segfault breaking unprivileged lxc containers is traced at:

http://bugs.alpinelinux.org/issues/4544

testing/shadow/APKBUILD

@@ -10,10 +10,12 @@ license="GPL"
 depends=
 depends_dev="linux-pam-dev"
 makedepends="$depends_dev"
-install=""
-subpackages="$pkgname-doc"
+subpackages="$pkgname-doc $pkgname-dbg"
 source="http://pkg-shadow.alioth.debian.org/releases/shadow-$pkgver.tar.xz
-	login.pamd"
+	login.pamd
+	dots-in-usernames.patch
+	cross-size-checks.patch
+	"
 options="suid"
 
 _builddir="$srcdir"/shadow-$pkgver
@@ -29,14 +31,15 @@ prepare() {
 
 build() {
 	cd "$_builddir"
+	CFLAGS="$CFLAGS -O0"
 	./configure --prefix=/usr \
 		--sysconfdir=/etc \
 		--mandir=/usr/share/man \
 		--infodir=/usr/share/info \
 		--localstatedir=/var \
 		--without-nscd \
-		--without-nologin \
 		--disable-nls \
+		--without-group-name-max-length \
 		|| return 1
 	make || return 1
 }
@@ -61,11 +64,21 @@ package() {
 	# avoid conflict with man-pages
 	rm "$pkgdir"/usr/share/man/man3/getspnam.3* \
 		"$pkgdir"/usr/share/man/man5/passwd.5* || return 1
+
+	# for unprivileged lxc containera
+	touch "$pkgdir"/etc/subuid
+	touch "$pkgdir"/etc/subgid
 }
 
 md5sums="2bfafe7d4962682d31b5eba65dba4fc8  shadow-4.2.1.tar.xz
-72dfc077a61ab7163e312640cc98bba8  login.pamd"
+72dfc077a61ab7163e312640cc98bba8  login.pamd
+f5fe3d7351d5e4046588b652c482c170  dots-in-usernames.patch
+75bc0cafb44aa86075d2ec056816cc3e  cross-size-checks.patch"
 sha256sums="3b0893d1476766868cd88920f4f1231c4795652aa407569faff802bcda0f3d41  shadow-4.2.1.tar.xz
-c0d0f2f77133b0663c5a578afeba45d5a9c703ff6f3f6aba3727dfe01877dac0  login.pamd"
+c0d0f2f77133b0663c5a578afeba45d5a9c703ff6f3f6aba3727dfe01877dac0  login.pamd
+ee58c622d1e8283dc4b17e93cc5e68f4ea4336654ebcfb48e46e0efaa864b77f  dots-in-usernames.patch
+fc3e32ddfc8eeb284412e8df7ad045ad27b742f5ee733db1a0bc14c97480e013  cross-size-checks.patch"
 sha512sums="7a14bf8e08126f0402e37b6e4c559615ced7cf829e39156d929ed05cd8813de48a77ff1f7f6fe707da04cf662a2e9e84c22d63d88dd1ed13f935fde594db95f0  shadow-4.2.1.tar.xz
-46a6f83f3698e101b58b8682852da749619412f75dfa85cecad03d0847f6c3dc452d984510db7094220e4570a0565b83b0556e16198ad894a3ec84b3e513d58d  login.pamd"
+46a6f83f3698e101b58b8682852da749619412f75dfa85cecad03d0847f6c3dc452d984510db7094220e4570a0565b83b0556e16198ad894a3ec84b3e513d58d  login.pamd
+745eea04c054226feba165b635dbb8570b8a04537d41e914400a4c54633c3a9cf350da0aabfec754fb8cf3e58fc1c8cf597b895506312f19469071760c11f31d  dots-in-usernames.patch
+c46760254439176babeef24d93900914092655af3a48f54385adf6ef5a3af76799fb7e96083acd27853d6ab6d7392543dbaf70bb26f164519e92f677da7851a4  cross-size-checks.patch"

testing/shadow/cross-size-checks.patch

+From 2cb54158b80cdbd97ca3b36df83f9255e923ae3f Mon Sep 17 00:00:00 2001
+From: James Le Cuirot <chewi@aura-online.co.uk>
+Date: Sat, 23 Aug 2014 09:46:39 +0100
+Subject: [PATCH] Check size of uid_t and gid_t using AC_CHECK_SIZEOF
+
+This built-in check is simpler than the previous method and, most
+importantly, works when cross-compiling.
+
+Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
+---
+ configure.in | 14 ++++----------
+ 1 file changed, 4 insertions(+), 10 deletions(-)
+
+diff --git a/configure.in b/configure.in
+index 1a3f841..4a4d6d0 100644
+--- a/configure.in
++++ b/configure.in
+@@ -335,16 +335,10 @@ if test "$enable_subids" != "no"; then
+ 	dnl
+ 	dnl FIXME: check if 32 bit UIDs/GIDs are supported by libc
+ 	dnl
+-	AC_RUN_IFELSE([AC_LANG_SOURCE([
+-#include <sys/types.h>
+-int main(void) {
+-	uid_t u;
+-	gid_t g;
+-	return (sizeof u < 4) || (sizeof g < 4);
+-}
+-	])], [id32bit="yes"], [id32bit="no"])
+-
+-	if test "x$id32bit" = "xyes"; then
++	AC_CHECK_SIZEOF([uid_t],, [#include "sys/types.h"])
++	AC_CHECK_SIZEOF([gid_t],, [#include "sys/types.h"])
++
++	if test "$ac_cv_sizeof_uid_t" -ge 4 && test "$ac_cv_sizeof_gid_t" -ge 4; then
+ 		AC_DEFINE(ENABLE_SUBIDS, 1, [Define to support the subordinate IDs.])
+ 		enable_subids="yes"
+ 	else
+-- 
+2.3.6
+
+

testing/shadow/dots-in-usernames.patch

+--- shadow-4.1.3/libmisc/chkname.c
++++ shadow-4.1.3/libmisc/chkname.c
+@@ -66,6 +66,7 @@
+ 		      ( ('0' <= *name) && ('9' >= *name) ) ||
+ 		      ('_' == *name) ||
+ 		      ('-' == *name) ||
++		      ('.' == *name) ||
+ 		      ( ('$' == *name) && ('\0' == *(name + 1)) )
+ 		     )) {
+ 			return false;
+