glib.supp: Suppress some dynamic type registrations too

These mirror the static ones, and we need the dynamic versions for
glib-networking -> gnutls stuff.

Closes: #410
Approved by: giuseppe

tests/glib.supp

@@ -15,6 +15,12 @@
    ...
    fun:g_type_register_static
 }
+{
+   g_type_register_dynamic
+   Memcheck:Leak
+   ...
+   fun:g_type_register_dynamic
+}
 {
    g_type_register_fundamental
    Memcheck:Leak
@@ -49,6 +55,12 @@
    ...
    fun:g_type_add_interface_static
 }
+{
+   g_type_add_interface_dynamic
+   Memcheck:Leak
+   ...
+   fun:g_type_add_interface_dynamic
+}
 {
    g_param_spec_internal
    Memcheck:Leak