updated for version 7.3.019

Problem:    ":nbstart" can fail silently.
Solution:   Give an error when netbeans is not supported by the GUI. (Xavier
            de Gaye)

src/version.c

@@ -714,6 +714,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    19,
 /**/
     18,
 /**/