Slirp: added basic 'dnssearch' option (currently only 1 entry supported).
TODO: 'dnssearch' option should accept a comma-separated list of suffixes.
Other slirp TODOs: SMB support on Linux, reduce code duplication (ARP, DHCP, TFTP)


git-svn-id: svn://svn.code.sf.net/p/bochs/code/trunk@12229 6c8e4198-a580-4521-a02f-c9ae86df1db9