Fix compilation of recent glib removing G_CONST_RETURN

https://bugzilla.gnome.org/show_bug.cgi?id=658884

diff -ur gamin-0.1.10/server.orig/gam_node.c gamin-0.1.10/server/gam_node.c

--- gamin-0.1.10/server.orig/gam_node.c	Mon Aug 26 15:25:23 2013

+++ gamin-0.1.10/server/gam_node.c	Mon Aug 26 15:25:54 2013

@@ -122,7 +122,7 @@

  * it has finished with the string.  If it must keep it longer, it

  * should makes its own copy.  The returned string must not be freed.

  */

-G_CONST_RETURN char *

+const char *

 gam_node_get_path(GamNode * node)

 {

     g_assert(node);

diff -ur gamin-0.1.10/server.orig/gam_node.h gamin-0.1.10/server/gam_node.h

--- gamin-0.1.10/server.orig/gam_node.h	Mon Aug 26 15:25:22 2013

+++ gamin-0.1.10/server/gam_node.h	Mon Aug 26 15:25:54 2013

@@ -58,7 +58,7 @@

 void                  gam_node_set_is_dir          (GamNode         *node,

 						   gboolean        is_dir);

-G_CONST_RETURN char  *gam_node_get_path            (GamNode         *node);

+const char  *gam_node_get_path            (GamNode         *node);

 GList                *gam_node_get_subscriptions   (GamNode         *node);

diff -ur gamin-0.1.10/server.orig/gam_subscription.c gamin-0.1.10/server/gam_subscription.c

--- gamin-0.1.10/server.orig/gam_subscription.c	Mon Aug 26 15:25:22 2013

+++ gamin-0.1.10/server/gam_subscription.c	Mon Aug 26 15:25:54 2013

@@ -141,7 +141,7 @@

  * @param sub the GamSubscription

  * @returns The path being monitored.  It should not be freed.

  */

-G_CONST_RETURN char *

+const char *

 gam_subscription_get_path(GamSubscription * sub)

 {

     if (sub == NULL)

diff -ur gamin-0.1.10/server.orig/gam_subscription.h gamin-0.1.10/server/gam_subscription.h

--- gamin-0.1.10/server.orig/gam_subscription.h	Mon Aug 26 15:25:22 2013

+++ gamin-0.1.10/server/gam_subscription.h	Mon Aug 26 15:25:54 2013

@@ -21,7 +21,7 @@

 int                  gam_subscription_get_reqno    (GamSubscription *sub);

-G_CONST_RETURN char *gam_subscription_get_path     (GamSubscription *sub);

+const char *gam_subscription_get_path     (GamSubscription *sub);

 GamListener         *gam_subscription_get_listener (GamSubscription *sub);