openl2tp: added patch fixing ppp setup timer

Note:

See patch header for a detailed description!

network/openl2tp/openl2tp-ppp_setup_timer_with_norpc.patch

@@ -0,0 +1,47 @@
+# --- SDE-COPYRIGHT-NOTE-BEGIN ---
+# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
+#
+# Filename: package/.../openl2tp/openl2tp-ppp_setup_timer_with_norpc.patch
+# Copyright (C) 2012 The OpenSDE Project
+#
+# More information can be found in the files COPYING and README.
+#
+# This patch file is dual-licensed. It is available under the license the
+# patched project is licensed under, as long as it is an OpenSource license
+# as defined at http://www.opensource.org/ (e.g. BSD, X11) or under the terms
+# of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+# --- SDE-COPYRIGHT-NOTE-END ---
+
+When building without L2TP_FEATURE_RPC_MANAGEMENT ppp setup timer, that is
+created in plugins/ppp_unix.c:1222, always expire. The only code path that
+deactivates it is triggered by openl2tp.so pppd plugin hook. This plugging
+doesn't seem to contain any RPC code now and use unix socket to communicate
+with opel2tpd and trigger l2tp_session_ppp_updown_ind that calls
+ppp_unix_session_ppp_created_hook to stop ppp setup timer. Uncommenting this
+plugin loading makes non-rpc version usable.
+
+Patch URL: http://sourceforge.net/tracker/download.php?group_id=118353&atid=680935&file_id=397349&aid=3149171
+
+Patch Reference: http://sourceforge.net/tracker/?func=detail&aid=3149171&group_id=118353&atid=680935
+
+ plugins/ppp_unix.c |    2 --
+ 1 files changed, 0 insertions(+), 2 deletions(-)
+
+diff --git a/plugins/ppp_unix.c b/plugins/ppp_unix.c
+index 869066f..6e1b60b 100644
+--- a/plugins/ppp_unix.c
++++ b/plugins/ppp_unix.c
+@@ -892,11 +892,9 @@ static int ppp_unix_pppd_spawn(struct ppp_context *ppp)
+ 
+ 		argv[arg++] = "plugin";
+ 		argv[arg++] = "pppol2tp.so";
+-#ifdef L2TP_FEATURE_RPC_MANAGEMENT
+ 		/* This plugin requires pppol2tp.so to be loaded first */
+ 		argv[arg++] = "plugin";
+ 		argv[arg++] = "openl2tp.so";
+-#endif
+ 
+ 		if (!ppp_unix_use_dummy_pppd()) {
+ 			int flags;