[Issue #668] Made the static error convenience functions public.
[Issue #668] Made the static error convenience functions public.

Paul-van-Klaveren/Alamofire,PhilJay/Alamofire,iosheadhunter/Alamofire,bnadim/Alamofire,Farteen/Alamofire,LionHeart123/Alamofire,Screon/Alamofire,AnthonyMDev/Alamofire,trauzti/Alamofire,davepatterson/Alamofire,Karumi/Alamofire-Result,Baza207/Alamofire,Holmusk/Alamofire,easyui/Alamofire,yaoxiaoyong/Alamofire,liuchungui/Alamofire,cesar-oyarzun-m/Alamofire,Baza207/Alamofire,mbhuta/Alamofire,mbhuta/Alamofire,guipanizzon/Alamofire,i-miss-you/Alamofire,i-miss-you/Alamofire,kevin-zqw/Alamofire,hazytint/Alamofire,MaWenxing/Alamofire,ernestopino/Alamofire,bscarano/Alamofire,Vkt0r/Alamofire,bnadim/Alamofire,jmkr/Alamofire,meteochu/Alamofire,rafaelvg/Alamofire,kevin-zqw/Alamofire,Paul-van-Klaveren/Alamofire,imjerrybao/Alamofire,yjkim/Alamofire,dandalf/Alamofire,easyui/Alamofire,richardPFisk/Alamofire,robskillington/Alamofire,brandenr/Alamofire,iosheadhunter/Alamofire,richardPFisk/Alamofire,jschmid/Alamofire,SampleLiao/Alamofire,revdotcom/Alamofire,petereddy/Alamofire,jmkr/Alamofire,rjsamson/Alamofire,revdotcom/Alamofire,zuthan/Alamofire,antigp/Alamofire,PhuocLinh/Alamofire,lumenlunae/Alamofire,lclamotte/Alamofire,meteochu/Alamofire,lclamotte/Alamofire,dawangjiaowolaixunshan/Alamofire,sai43/Alamofire,androidrivne/Alamofire,muukii/Alamofire,agustindc-rga/Alamofire,PhuocLinh/Alamofire,robskillington/Alamofire,alvincrisuy/Alamofire,suxinde2009/Alamofire,yimajo/Alamofire,Holmusk/Alamofire,trauzti/Alamofire,imjerrybao/Alamofire,dgdosen/Alamofire,liuchungui/Alamofire,libiao88/Alamofire,DouKing/Alamofire,yimajo/Alamofire,john-langley/Alamofire,ThornTechPublic/Alamofire,PhilJay/Alamofire,st3fan/Alamofire,thebugcode/Alamofire,RyanCodes/Alamofire,kiancheong/Alamofire,petereddy/Alamofire,ikesyo/Alamofire,sarunw/Alamofire,ThornTechPublic/Alamofire,foxkillerli/Alamofire,MaWenxing/Alamofire,alex-learn/Alamofire,christophercotton/Alamofire,twobitlabs/Alamofire,youweit/Alamofire,red3/Alamofire,bscarano/Alamofire,Swiftosis/Alamofire,nickygerritsen/Alamofire,jschmid/Alamofire,Alamofire/Alamofire,christophercotton/Alamofire,chokett/Alamofire,red3/Alamofire,gauravds/Alamofire,dawangjiaowolaixunshan/Alamofire,nickygerritsen/Alamofire,Vkt0r/Alamofire,tonyli508/AlamofireDomain,Swiftosis/Alamofire,irealme/Alamofire,mcgrady20150318/Alamofire,DreamHill/Alamofire,rafaelvg/Alamofire,followwind007/Alamofire,Staance/Alamofire,john-langley/Alamofire,Noobish1/Alamofire,Lomotif/Alamofire,ikesyo/Alamofire,yujiaao/Alamofire,alex-learn/Alamofire,yjkim/Alamofire,SampleLiao/Alamofire,leelili/Alamofire,lumenlunae/Alamofire,BNakum/Alamofire,dandalf/Alamofire,agustindc-rga/Alamofire,Farteen/Alamofire,zuthan/Alamofire,AnthonyMDev/Alamofire,androidrivne/Alamofire,Koalappp/Alamofire,hazytint/Alamofire,followwind007/Alamofire,Karumi/Alamofire-Result,yaoxiaoyong/Alamofire,kiancheong/Alamofire,DreamHill/Alamofire,gauravds/Alamofire,neugartf/Alamofire,Staance/Alamofire,LionHeart123/Alamofire,cmpt275group9/Alamofire,irealme/Alamofire,Screon/Alamofire,muukii/Alamofire,thebugcode/Alamofire,brandenr/Alamofire,BNakum/Alamofire,RyanCodes/Alamofire,tonyli508/AlamofireDomain,tokorom/Alamofire,st3fan/Alamofire,mcgrady20150318/Alamofire,antigp/Alamofire,DouKing/Alamofire,leelili/Alamofire,suxinde2009/Alamofire,Koalappp/Alamofire,libiao88/Alamofire,Holmusk/Alamofire,rain1988/Alamofire,guipanizzon/Alamofire,tokorom/Alamofire,Lomotif/Alamofire,cesar-oyarzun-m/Alamofire,sarunw/Alamofire,cmpt275group9/Alamofire,foxkillerli/Alamofire,twobitlabs/Alamofire,rain1988/Alamofire,Noobish1/Alamofire,rjsamson/Alamofire,Alamofire/Alamofire,yujiaao/Alamofire,neugartf/Alamofire,ernestopino/Alamofire,dgdosen/Alamofire,chokett/Alamofire,davepatterson/Alamofire,sai43/Alamofire,alvincrisuy/Alamofire,youweit/Alamofire