Introduce get_meta_refresh() and refactor response_follow_meta_refresh().
Introduce get_meta_refresh() and refactor response_follow_meta_refresh().

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