Avoid duplication of listeners.
Avoid duplication of listeners.

If a listener is both a test and a configuration listener, it was
added twice.

raindev/testng,scr/testng,raindev/testng,AJ-72/testng,missedone/testng,krmahadevan/testng,VladRassokhin/testng,gjuillot/testng,tremes/testng,tremes/testng,gjuillot/testng,emopers/testng,6ft-invsbl-rbbt/testng,msebire/testng,scr/testng,JeshRJ/myRepRJ,krmahadevan/testng,AJ-72/testng,emopers/testng,gjuillot/testng,juherr/testng,6ft-invsbl-rbbt/testng,rschmitt/testng,cbeust/testng,missedone/testng,bmlct/testng,tremes/testng,6ft-invsbl-rbbt/testng,cbeust/testng,akozlova/testng,juherr/testng,cbeust/testng,rschmitt/testng,VladRassokhin/testng,akozlova/testng,jerome-jacob/testng,krmahadevan/testng,aledsage/testng,akozlova/testng,tobecrazy/testng,krmahadevan/testng,aledsage/testng,missedone/testng,bmlct/testng,jaypal/testng,raindev/testng,gjuillot/testng,VikingDen/testng,smaudet/testng,jerome-jacob/testng,s2oBCN/testng,jaypal/testng,scr/testng,aledsage/testng,scr/testng,VladRassokhin/testng,gjuillot/testng,meeroslaph/testng,msebire/testng,jerome-jacob/testng,akozlova/testng,smaudet/testng,rschmitt/testng,jaypal/testng,s2oBCN/testng,VikingDen/testng,VikingDen/testng,6ft-invsbl-rbbt/testng,meeroslaph/testng,emopers/testng,emopers/testng,aledsage/testng,krmahadevan/testng,emopers/testng,jaypal/testng,jaypal/testng,JeshRJ/myRepRJ,VladRassokhin/testng,rschmitt/testng,jerome-jacob/testng,juherr/testng,raindev/testng,cbeust/testng,tobecrazy/testng,missedone/testng,bmlct/testng,AJ-72/testng,VikingDen/testng,s2oBCN/testng,juherr/testng,raindev/testng,meeroslaph/testng,AJ-72/testng,tremes/testng,VladRassokhin/testng,smaudet/testng,meeroslaph/testng,AJ-72/testng,missedone/testng,s2oBCN/testng,msebire/testng,tobecrazy/testng,AJ-72/testng,aledsage/testng,JeshRJ/myRepRJ,rschmitt/testng,scr/testng,akozlova/testng,JeshRJ/myRepRJ,tobecrazy/testng,VladRassokhin/testng,6ft-invsbl-rbbt/testng,s2oBCN/testng,tobecrazy/testng,msebire/testng,juherr/testng,aledsage/testng,raindev/testng,smaudet/testng,meeroslaph/testng,bmlct/testng,bmlct/testng,cbeust/testng,VikingDen/testng,jerome-jacob/testng,msebire/testng,JeshRJ/myRepRJ,tremes/testng,smaudet/testng