Fix Python 2.5 compatibility issue.
Fix Python 2.5 compatibility issue.

ByteInternet/libcloud,DimensionDataCBUSydney/libcloud,aviweit/libcloud,apache/libcloud,briancurtin/libcloud,techhat/libcloud,Kami/libcloud,jimbobhickville/libcloud,t-tran/libcloud,pquentin/libcloud,mtekel/libcloud,MrBasset/libcloud,cloudControl/libcloud,sahildua2305/libcloud,aleGpereira/libcloud,dcorbacho/libcloud,sgammon/libcloud,ClusterHQ/libcloud,atsaki/libcloud,cryptickp/libcloud,vongazman/libcloud,techhat/libcloud,schaubl/libcloud,cryptickp/libcloud,Cloud-Elasticity-Services/as-libcloud,JamesGuthrie/libcloud,Cloud-Elasticity-Services/as-libcloud,smaffulli/libcloud,Itxaka/libcloud,vongazman/libcloud,wuyuewen/libcloud,supertom/libcloud,briancurtin/libcloud,cryptickp/libcloud,atsaki/libcloud,cloudControl/libcloud,mgogoulos/libcloud,mbrukman/libcloud,thesquelched/libcloud,wido/libcloud,atsaki/libcloud,marcinzaremba/libcloud,mtekel/libcloud,niteoweb/libcloud,samuelchong/libcloud,mgogoulos/libcloud,JamesGuthrie/libcloud,pquentin/libcloud,Jc2k/libcloud,t-tran/libcloud,sergiorua/libcloud,techhat/libcloud,SecurityCompass/libcloud,samuelchong/libcloud,Kami/libcloud,lochiiconnectivity/libcloud,jimbobhickville/libcloud,aleGpereira/libcloud,smaffulli/libcloud,watermelo/libcloud,JamesGuthrie/libcloud,curoverse/libcloud,mbrukman/libcloud,andrewsomething/libcloud,munkiat/libcloud,carletes/libcloud,ZuluPro/libcloud,Scalr/libcloud,ByteInternet/libcloud,Scalr/libcloud,kater169/libcloud,mistio/libcloud,sgammon/libcloud,ZuluPro/libcloud,ZuluPro/libcloud,curoverse/libcloud,Kami/libcloud,pantheon-systems/libcloud,samuelchong/libcloud,mistio/libcloud,mathspace/libcloud,Verizon/libcloud,andrewsomething/libcloud,aleGpereira/libcloud,jerryblakley/libcloud,mathspace/libcloud,carletes/libcloud,munkiat/libcloud,StackPointCloud/libcloud,marcinzaremba/libcloud,lochiiconnectivity/libcloud,jimbobhickville/libcloud,illfelder/libcloud,pantheon-systems/libcloud,vongazman/libcloud,DimensionDataCBUSydney/libcloud,thesquelched/libcloud,munkiat/libcloud,wuyuewen/libcloud,supertom/libcloud,erjohnso/libcloud,StackPointCloud/libcloud,lochiiconnectivity/libcloud,mtekel/libcloud,NexusIS/libcloud,sfriesel/libcloud,cloudControl/libcloud,Verizon/libcloud,sahildua2305/libcloud,illfelder/libcloud,mgogoulos/libcloud,StackPointCloud/libcloud,SecurityCompass/libcloud,apache/libcloud,SecurityCompass/libcloud,wrigri/libcloud,andrewsomething/libcloud,sergiorua/libcloud,pantheon-systems/libcloud,briancurtin/libcloud,t-tran/libcloud,niteoweb/libcloud,jerryblakley/libcloud,schaubl/libcloud,kater169/libcloud,NexusIS/libcloud,wrigri/libcloud,aviweit/libcloud,MrBasset/libcloud,thesquelched/libcloud,pquentin/libcloud,sergiorua/libcloud,sfriesel/libcloud,erjohnso/libcloud,ClusterHQ/libcloud,erjohnso/libcloud,Verizon/libcloud,schaubl/libcloud,wido/libcloud,supertom/libcloud,iPlantCollaborativeOpenSource/libcloud,NexusIS/libcloud,iPlantCollaborativeOpenSource/libcloud,sfriesel/libcloud,sahildua2305/libcloud,dcorbacho/libcloud,illfelder/libcloud,wrigri/libcloud,Cloud-Elasticity-Services/as-libcloud,Itxaka/libcloud,wido/libcloud,Scalr/libcloud,dcorbacho/libcloud,watermelo/libcloud,jerryblakley/libcloud,DimensionDataCBUSydney/libcloud,curoverse/libcloud,aviweit/libcloud,niteoweb/libcloud,mistio/libcloud,iPlantCollaborativeOpenSource/libcloud,Itxaka/libcloud,wuyuewen/libcloud,apache/libcloud,watermelo/libcloud,smaffulli/libcloud,ByteInternet/libcloud,MrBasset/libcloud,mathspace/libcloud,mbrukman/libcloud,marcinzaremba/libcloud,carletes/libcloud,kater169/libcloud,Jc2k/libcloud