More runtime file fixes for 'compatible' mode.

runtime/lang/menu_chinese_gb.936.vim

@@ -9,6 +9,8 @@ if exists("did_menu_trans")
   finish
 endif
 let did_menu_trans = 1
+let s:keepcpo= &cpo
+set cpo&vim
 
 scriptencoding cp936
 
@@ -261,3 +263,6 @@ menutrans &Highlight\ test
 menutrans &Convert\ to\ HTML		ת<EFBFBD><EFBFBD><EFBFBD><EFBFBD>\ HTML(&C)
 menutrans Set\ '&syntax'\ only		<09><><EFBFBD>趨\ 'syntax'(&S)
 menutrans Set\ '&filetype'\ too		Ҳ<EFBFBD>趨\ 'filetype'(&F)
+
+let &cpo = s:keepcpo
+unlet s:keepcpo