made XmlRpcRequestTest inherit from RequestTest and removed redundant test
made XmlRpcRequestTest inherit from RequestTest and removed redundant test

wzyuliyang/scrapy,jorik041/scrapy,WilliamKinaan/scrapy,darkrho/scrapy-scrapy,yusofm/scrapy,hyrole/scrapy,johnardavies/scrapy,kimimj/scrapy,Slater-Victoroff/scrapy,umrashrf/scrapy,shaform/scrapy,kashyap32/scrapy,ndemir/scrapy,starrify/scrapy,dangra/scrapy,Digenis/scrapy,Zephor5/scrapy,nguyenhongson03/scrapy,livepy/scrapy,KublaikhanGeek/scrapy,codebhendi/scrapy,elijah513/scrapy,fqul/scrapy,codebhendi/scrapy,mouadino/scrapy,songfj/scrapy,Slater-Victoroff/scrapy,liyy7/scrapy,starrify/scrapy,livepy/scrapy,jorik041/scrapy,darkrho/scrapy-scrapy,songfj/scrapy,jiezhu2007/scrapy,cursesun/scrapy,tntC4stl3/scrapy,Slater-Victoroff/scrapy,bmess/scrapy,godfreyy/scrapy,foromer4/scrapy,nfunato/scrapy,tliber/scrapy,hansenDise/scrapy,Ryezhang/scrapy,kmike/scrapy,hectoruelo/scrapy,yidongliu/scrapy,Partoo/scrapy,kalessin/scrapy,dracony/scrapy,snowdream1314/scrapy,hectoruelo/scrapy,wenyu1001/scrapy,zhangtao11/scrapy,johnardavies/scrapy,curita/scrapy,barraponto/scrapy,fontenele/scrapy,snowdream1314/scrapy,1yvT0s/scrapy,xiao26/scrapy,jc0n/scrapy,mlyundin/scrapy,elacuesta/scrapy,eliasdorneles/scrapy,Adai0808/scrapy-1,jeffreyjinfeng/scrapy,smaty1/scrapy,songfj/scrapy,haiiiiiyun/scrapy,redapple/scrapy,pablohoffman/scrapy,aivarsk/scrapy,YeelerG/scrapy,Bourneer/scrapy,tagatac/scrapy,pfctdayelise/scrapy,w495/scrapy,emschorsch/scrapy,Adai0808/scrapy-1,stenskjaer/scrapy,pablohoffman/scrapy,nowopen/scrapy,hwsyy/scrapy,moraesnicol/scrapy,hbwzhsh/scrapy,nfunato/scrapy,kimimj/scrapy,Cnfc19932/scrapy,nett55/scrapy,devGregA/scrapy,shaform/scrapy,wujuguang/scrapy,taito/scrapy,zackslash/scrapy,jeffreyjinfeng/scrapy,beni55/scrapy,KublaikhanGeek/scrapy,arush0311/scrapy,jamesblunt/scrapy,beni55/scrapy,nikgr95/scrapy,dgillis/scrapy,xiao26/scrapy,jorik041/scrapy,carlosp420/scrapy,GregoryVigoTorres/scrapy,TarasRudnyk/scrapy,nikgr95/scrapy,crasker/scrapy,cleydson/scrapy,lacrazyboy/scrapy,Partoo/scrapy,kazitanvirahsan/scrapy,Lucifer-Kim/scrapy,hyrole/scrapy,ssh-odoo/scrapy,pombredanne/scrapy,Timeship/scrapy,gbirke/scrapy,pawelmhm/scrapy,WilliamKinaan/scrapy,finfish/scrapy,URXtech/scrapy,Parlin-Galanodel/scrapy,OpenWhere/scrapy,wzyuliyang/scrapy,codebhendi/scrapy,olorz/scrapy,Partoo/scrapy,aivarsk/scrapy,cyrixhero/scrapy,ENjOyAbLE1991/scrapy,yidongliu/scrapy,crasker/scrapy,fafaman/scrapy,yarikoptic/scrapy,godfreyy/scrapy,WilliamKinaan/scrapy,heamon7/scrapy,cyberplant/scrapy,yarikoptic/scrapy,ENjOyAbLE1991/scrapy,Allianzcortex/scrapy,Digenis/scrapy,pawelmhm/scrapy,carlosp420/scrapy,godfreyy/scrapy,Geeglee/scrapy,hectoruelo/scrapy,CodeJuan/scrapy,haiiiiiyun/scrapy,ramiro/scrapy,Djlavoy/scrapy,chekunkov/scrapy,Parlin-Galanodel/scrapy,tliber/scrapy,bmess/scrapy,fpy171/scrapy,redapple/scrapy,hwsyy/scrapy,agreen/scrapy,fontenele/scrapy,olafdietsche/scrapy,zhangtao11/scrapy,rootAvish/scrapy,cursesun/scrapy,heamon7/scrapy,sigma-random/scrapy,legendtkl/scrapy,mgedmin/scrapy,elacuesta/scrapy,rdowinton/scrapy,ashishnerkar1/scrapy,1yvT0s/scrapy,agusc/scrapy,irwinlove/scrapy,rolando/scrapy,snowdream1314/scrapy,URXtech/scrapy,Geeglee/scrapy,Lucifer-Kim/scrapy,yusofm/scrapy,stenskjaer/scrapy,nowopen/scrapy,kashyap32/scrapy,Adai0808/scrapy-1,Ryezhang/scrapy,wangjun/scrapy,ssteo/scrapy,scrapy/scrapy,Djlavoy/scrapy,wzyuliyang/scrapy,z-fork/scrapy,nguyenhongson03/scrapy,aivarsk/scrapy,devGregA/scrapy,csalazar/scrapy,ylcolala/scrapy,agusc/scrapy,jc0n/scrapy,tagatac/scrapy,huoxudong125/scrapy,GregoryVigoTorres/scrapy,moraesnicol/scrapy,legendtkl/scrapy,arush0311/scrapy,foromer4/scrapy,z-fork/scrapy,fafaman/scrapy,profjrr/scrapy,webmakin/scrapy,nett55/scrapy,Parlin-Galanodel/scrapy,nett55/scrapy,IvanGavran/scrapy,CodeJuan/scrapy,zorojean/scrapy,cyrixhero/scrapy,ylcolala/scrapy,github-account-because-they-want-it/scrapy,TarasRudnyk/scrapy,jiezhu2007/scrapy,taito/scrapy,Preetwinder/scrapy,IvanGavran/scrapy,IvanGavran/scrapy,CENDARI/scrapy,olorz/scrapy,liyy7/scrapy,kmike/scrapy,ssh-odoo/scrapy,CENDARI/scrapy,nowopen/scrapy,olafdietsche/scrapy,hansenDise/scrapy,rklabs/scrapy,ssteo/scrapy,Chenmxs/scrapy,emschorsch/scrapy,curita/scrapy,amboxer21/scrapy,YeelerG/scrapy,amboxer21/scrapy,cyberplant/scrapy,kimimj/scrapy,Djlavoy/scrapy,wenyu1001/scrapy,bmess/scrapy,github-account-because-they-want-it/scrapy,dhenyjarasandy/scrapy,tntC4stl3/scrapy,csalazar/scrapy,smaty1/scrapy,jeffreyjinfeng/scrapy,barraponto/scrapy,cyberplant/scrapy,CENDARI/scrapy,profjrr/scrapy,rdowinton/scrapy,joshlk/scrapy,chekunkov/scrapy,AaronTao1990/scrapy,rdowinton/scrapy,joshlk/scrapy,kazitanvirahsan/scrapy,wujuguang/scrapy,dgillis/scrapy,smaty1/scrapy,eliasdorneles/scrapy,devGregA/scrapy,ssh-odoo/scrapy,famorted/scrapy,xiao26/scrapy,heamon7/scrapy,pranjalpatil/scrapy,rklabs/scrapy,barraponto/scrapy,chekunkov/scrapy,lacrazyboy/scrapy,GregoryVigoTorres/scrapy,ramiro/scrapy,Cnfc19932/scrapy,liyy7/scrapy,coderabhishek/scrapy,taito/scrapy,dangra/scrapy,yarikoptic/scrapy,scrapy/scrapy,arush0311/scrapy,dhenyjarasandy/scrapy,ashishnerkar1/scrapy,tntC4stl3/scrapy,pranjalpatil/scrapy,coderabhishek/scrapy,raphaelfruneaux/scr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