wmaker: replaced old email address with the official one

In the crash handling dialog there was a reference to an old email address.
This patch replaces it with the official one, taken from the 'configure.ac'
definition so it will not need manual update anymore.

The mail address is inserted in the string with a '%s' in order to not have
it in the translation files (po) to ease the maintainer's task in case of
future change.

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>

po/fr.po

@@ -477,13 +477,15 @@ msgstr ""
 msgid "Window Maker received signal %i."
 msgstr "Window Maker a reçu le signal %i."
 
-#: ../src/dialog.c:1748
+#. Comment for the PO file: the %s is an email address
+#: ../src/dialog.c:1632
+#, c-format
 msgid ""
 " This fatal error occured probably due to a bug. Please fill the included "
-"BUGFORM and report it to bugs@windowmaker.info."
+"BUGFORM and report it to %s."
 msgstr ""
 " Cette erreur est probablement due à un bogue. Remplissez le formulaire "
-"BUGFORM et envoyez-le à bugs@windowmaker.info."
+"BUGFORM et envoyez-le à %s."
 
 #: ../src/dialog.c:1757
 msgid "What do you want to do now?"
@@ -1439,14 +1441,6 @@ msgstr "Démarrage d'un autre gestionnaire de fenêtres..."
 msgid "failed to start alternate window manager. Aborting."
 msgstr "Impossible de démarrer un autre gestionnaire de fenêtres. Abandon."
 
-#: ../src/startup.c:419
-msgid ""
-"a fatal error has occured, probably due to a bug. Please fill the included "
-"BUGFORM and report it."
-msgstr ""
-"Erreur probablement due à un bogue. Merci de remplir le formulaire BUGFORM "
-"et de l'envoyer à bugs@windowmaker.info."
-
 #: ../src/startup.c:894
 #, c-format
 msgid "icon size is configured to %i, but it's too small. Using 16, instead\n"