Add new user agent aliases "Windows IE 8" and "Windows IE 9".
Add new user agent aliases "Windows IE 8" and "Windows IE 9".

jeremiahmarks/mechanize,flavorjones/mechanize,sjchakrav/mechanize,pwnall/mechanize,jeremiahmarks/mechanize,bugmelody/mechanize,sjchakrav/mechanize,eligoenergy/mechanize,gchan/mechanize,eligoenergy/mechanize,pwnall/mechanize,uksa/mechanize,sparklemotion/mechanize,gchan/mechanize,bugmelody/mechanize,uksa/mechanize,sparklemotion/mechanize