[Libvir] [PATCH] Remove curses, don't require readline

This patch removes checking for curses/ncurses. It is never used. It also allows libvirt to be compiled without readline support. If readline support is not available then the only difference is that 'virsh' will be built without it -- in other words, command line editing will not work in virsh. Rich. -- Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/ Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 03798903