Client error handling - Notify if no audio codecs have been found at startup

The client receives almost no warnings or errors notification.
This should be improved
If no audio codecs have been found, a window pops up and describe the error.
Then the GTK kills the daemon and quits.

sflphone-gtk/src/Makefile.am

@@ -28,4 +28,5 @@ sflphone_gtk_LDADD = $(DEPS_LIBS)
 
 AM_CPPFLAGS = $(DEPS_CFLAGS) \
               -DICONS_DIR=\""$(datadir)/sflphone"\" \
-              -DICON_DIR=\""$(datadir)/pixmaps"\"
+              -DICON_DIR=\""$(datadir)/pixmaps"\" \
+	      -DCODECS_DIR=\""$(libdir)/sflphone/codecs"\"

sflphone-gtk/src/actions.c

@@ -619,5 +619,12 @@ sflphone_fill_codec_list()
       codec_list_add(c);
     }
   }
+  if( codec_list_get_size() == 0) {
+    gchar* markup = malloc(1000);
+    sprintf(markup , "<b>Error: No audio codecs found.\n\n</b> SFL audio codecs have to be placed in <i>%s</i> or in the <b>.sflphone</b> directory in your home( <i>%s</i> )", CODECS_DIR , g_get_home_dir());
+    main_window_error_message( markup );
+    g_free( markup );
+    dbus_unregister(getpid());
+    exit(0);
+  }
 }
-  

sflphone-gtk/src/mainwindow.h

@@ -41,7 +41,7 @@ void main_window_error_message(gchar * markup);
 
 void main_window_warning_message(gchar * markup);
 
-void main_window_warning_message(gchar * markup);
+void main_window_info_message(gchar * markup);
 
 void status_bar_message(const gchar * message);
 

sflphone-gtk/src/menus.c

@@ -106,11 +106,8 @@ help_about ( void * foo)
     "Julien Plissonneau Duquene <julien.plissonneau.duquene@savoirfairelinux.com>",
     "Alexandre Bourget <alexandre.bourget@savoirfairelinux.com>",
     "Pierre-Luc Beaudoin <pierre-luc@squidy.info>", 
-    "Imran Akbar", 
     "Jean-Philippe Barrette-LaPierre",
     "Laurielle Lea",
-    "Mikael Magnusson",
-    "Sherry Yang", 
     NULL};
   gchar *artists[] = {
     "Pierre-Luc Beaudoin <pierre-luc@squidy.info>",