xbps_yesno/noyes: change the funcs to only accept "yes" or "no" (case insensitive) answers rather than the short ones.
xbps_yesno/noyes: change the funcs to only accept "yes" or "no"
(case insensitive) answers rather than the short ones.

--HG--
extra : convert_revision : xtraeme%40gmail.com-20091222112759-0mnzjt3qcwp45ugn

datenwolf/xbps,ebfe/xbps,stpx/xbps,ebfe/xbps,stpx/xbps,ebfe/xbps,stpx/xbps,datenwolf/xbps,datenwolf/xbps