merge_modules: preserve exec right

jk_web/merge_modules.py

@@ -56,6 +56,8 @@ def merge(do_commit):
                     else:
                         with open(web_dir+path+fname, "wb") as f:
                             f.write(data)
+                        if os.access(module_dir+path+fname, os.X_OK):
+                            os.chmod(web_dir+path+fname, 0o755)
 
     for m in modules:
         go(m, '/')