fixed inproper escaping on multipart content-type
fixed inproper escaping on multipart content-type

mtdtao/SwiftHTTP,modulexcite/SwiftHTTP,robert1982/Swift-Http,krin-san/SwiftHTTP,raheelahmad/SwiftHTTP,yyMlv/SwiftHTTP,tanimislam/SwiftHTTP,mtdtao/SwiftHTTP,sunfei/SwiftHTTP,modulexcite/SwiftHTTP,ChinaPicture/SwiftHTTP,alex-learn/SwiftHTTP,msdgwzhy6/SwiftHTTP,cwoloszynski/SwiftHTTP,yinchuandong/SwiftHTTP,yinchuandong/SwiftHTTP,upf/SwiftHTTP,daltoniam/SwiftHTTP,sunfei/SwiftHTTP,ChinaPicture/SwiftHTTP,daltoniam/SwiftHTTP,ceosilvajr/SwiftHTTP,msdgwzhy6/SwiftHTTP,xiexinze/SwiftHTTP,xiexinze/SwiftHTTP,jhinsel/SwiftHTTP,krin-san/SwiftHTTP,iThanh/SwiftHTTP,cwoloszynski/SwiftHTTP,alex-learn/SwiftHTTP,raheelahmad/SwiftHTTP,jhinsel/SwiftHTTP,tanimislam/SwiftHTTP,ohad7/SwiftHTTP,ohad7/SwiftHTTP,upf/SwiftHTTP,ChinaPicture/SwiftHTTP,sunfei/SwiftHTTP,ceosilvajr/SwiftHTTP,tanimislam/SwiftHTTP,krin-san/SwiftHTTP,robert1982/Swift-Http,ohad7/SwiftHTTP,raheelahmad/SwiftHTTP,yyMlv/SwiftHTTP,mtdtao/SwiftHTTP,iThanh/SwiftHTTP,msdgwzhy6/SwiftHTTP,robert1982/Swift-Http,ceosilvajr/SwiftHTTP,yyMlv/SwiftHTTP,modulexcite/SwiftHTTP