this patch only add three more script files to system
which is useful for mutt.
msmtpqueue/msmtp-enqueue.sh
msmtpqueue/msmtp-listqueue.sh
msmtpqueue/msmtp-runqueue.sh
Patch from Xiangfu Liu
git-svn-id: svn://svn.openwrt.org/openwrt/packages@24176 3c298f89-4303-0410-b956-a3cf2f4a3e73