Add/Fix: check for duplicate command_name.
Add/Fix: check for duplicate command_name.

Simage/shinken,rednach/krill,ddurieux/alignak,baloo/shinken,Aimage/shinken,ddurieux/alignak,baloo/shinken,naparuba/shinken,dfranco/shinken,gst/alignak,Aimage/shinken,xorpaul/shinken,kaji-project/shinken,claneys/shinken,staute/shinken_deb,geektophe/shinken,titilambert/alignak,rledisez/shinken,rledisez/shinken,lets-software/shinken,fpeyre/shinken,tal-nino/shinken,baloo/shinken,claneys/shinken,staute/shinken_deb,KerkhoffTechnologies/shinken,mohierf/shinken,h4wkmoon/shinken,Aimage/shinken,geektophe/shinken,baloo/shinken,rednach/krill,savoirfairelinux/shinken,h4wkmoon/shinken,fpeyre/shinken,staute/shinken_package,naparuba/shinken,tal-nino/shinken,lets-software/shinken,xorpaul/shinken,geektophe/shinken,ddurieux/alignak,gst/alignak,baloo/shinken,savoirfairelinux/shinken,staute/shinken_package,tal-nino/shinken,fpeyre/shinken,claneys/shinken,Simage/shinken,KerkhoffTechnologies/shinken,Alignak-monitoring/alignak,h4wkmoon/shinken,peeyush-tm/shinken,rledisez/shinken,tal-nino/shinken,tal-nino/shinken,xorpaul/shinken,naparuba/shinken,xorpaul/shinken,Aimage/shinken,fpeyre/shinken,geektophe/shinken,rledisez/shinken,naparuba/shinken,staute/shinken_deb,titilambert/alignak,Simage/shinken,lets-software/shinken,KerkhoffTechnologies/shinken,savoirfairelinux/shinken,lets-software/shinken,kaji-project/shinken,peeyush-tm/shinken,KerkhoffTechnologies/shinken,claneys/shinken,fpeyre/shinken,rednach/krill,baloo/shinken,mohierf/shinken,staute/shinken_package,dfranco/shinken,staute/shinken_package,lets-software/shinken,xorpaul/shinken,peeyush-tm/shinken,geektophe/shinken,claneys/shinken,dfranco/shinken,KerkhoffTechnologies/shinken,naparuba/shinken,dfranco/shinken,fpeyre/shinken,staute/shinken_deb,savoirfairelinux/shinken,ddurieux/alignak,h4wkmoon/shinken,xorpaul/shinken,staute/shinken_package,ddurieux/alignak,titilambert/alignak,staute/shinken_deb,gst/alignak,kaji-project/shinken,rednach/krill,kaji-project/shinken,gst/alignak,rledisez/shinken,KerkhoffTechnologies/shinken,savoirfairelinux/shinken,peeyush-tm/shinken,peeyush-tm/shinken,dfranco/shinken,Aimage/shinken,staute/shinken_deb,naparuba/shinken,kaji-project/shinken,kaji-project/shinken,rednach/krill,h4wkmoon/shinken,Simage/shinken,Simage/shinken,lets-software/shinken,h4wkmoon/shinken,staute/shinken_package,dfranco/shinken,savoirfairelinux/shinken,mohierf/shinken,rledisez/shinken,mohierf/shinken,claneys/shinken,kaji-project/shinken,Simage/shinken,rednach/krill,Alignak-monitoring/alignak,titilambert/alignak,ddurieux/alignak,xorpaul/shinken,mohierf/shinken,h4wkmoon/shinken,h4wkmoon/shinken,peeyush-tm/shinken,mohierf/shinken,xorpaul/shinken,geektophe/shinken,Aimage/shinken,tal-nino/shinken