Slirp: added SMB support for non-Windows platforms. The new slirp.conf option
'smb_export' can be used to set up shared folder. TODO: the location of 'smbd'
and IP address of the SMB server is currently hardcoded.


git-svn-id: svn://svn.code.sf.net/p/bochs/code/trunk@12249 6c8e4198-a580-4521-a02f-c9ae86df1db9