wscript: Add enable-scripting option

wscript

@@ -147,6 +147,10 @@ configuration in order to save typing.
                  default=False,
                  help="Enable SFML graphics library")
 
+    g.add_option('--enable-scripting', action='store_true',
+                 default=False,
+                 help="Enable onboard scripting engine")
+
     g.add_option('--static',
         action='store_true',
         default=False,
@@ -234,6 +238,12 @@ def configure(cfg):
     else:
         cfg.end_msg('disabled', color='YELLOW')
 
+    cfg.start_msg('Scripting')
+    if cfg.options.enable_scripting:
+        cfg.end_msg('enabled')
+    else:
+        cfg.end_msg('disabled', color='YELLOW')
+
     cfg.env.append_value('GIT_SUBMODULES', 'mavlink')
 
     cfg.env.prepend_value('INCLUDES', [