Openwrt 编译出现intltool版本过低的错误，怎么升级版本，这是在staging_dir目录下的报错，也不是pacakge的错误，，，错误如下：
Unescaped left brace in regex is illegal here in regex; marked by <-- HERE in m/^(.*)\${ <-- HERE ?([A-Z_]+)}?(.*)$/ at /usr/local/bin/intltool-update line 1065.
checking for intltool >= 0.41.0... found
configure: error: Your intltool is too old. You need intltool 0.41.0 or later.