open-isns: add open-isns libs

needed for open-iscsi

Signed-off-by: Lucian Cristian <lucian.cristian@gmail.com>

net/open-isns/patches/02-fix_signed_vs_unsigned.patch

@@ -0,0 +1,41 @@
+From 40eb9ce75518817762a0eac4a93016ab817add89 Mon Sep 17 00:00:00 2001
+From: Lee Duncan <lduncan@suse.com>
+Date: Sat, 1 Feb 2020 10:23:04 -0800
+Subject: [PATCH] Fix 586 compile issue and remove -Werror
+
+Using -Werror causes any issue to break the build, whereas
+I'd rather let the build continue and address the issue.
+
+Also, fixed one signed-vs-unsigned compare for time_t, which
+shows up only on 586 (32-bit).
+---
+ configure.ac | 2 +-
+ isnsdd.c     | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/configure.ac b/configure.ac
+index e4f3995..d956e58 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -17,7 +17,7 @@ AC_PATH_PROG(SH, sh)
+ dnl C Compiler features
+ AC_C_INLINE
+ if test "$GCC" = "yes"; then
+-        CFLAGS="-Wall -Werror -Wextra $CFLAGS"
++        CFLAGS="-Wall -Wextra $CFLAGS"
+ 	CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
+ fi
+ 
+diff --git a/isnsdd.c b/isnsdd.c
+index 58825cc..9cedb9f 100644
+--- a/isnsdd.c
++++ b/isnsdd.c
+@@ -401,7 +401,7 @@ check_portal_registration(__attribute__((unused))void *ptr)
+ 			continue;
+ 
+ 		last_modified = isns_object_last_modified(obj);
+-		if (last_modified + 2 * interval > now) {
++		if ((time_t)(last_modified + 2 * interval) > now) {
+ 			good_portals++;
+ 			continue;
+ 		}