updated CONTRIBUTORS file
updated CONTRIBUTORS file

gaborkolozsy/XChange,ww3456/XChange,LeonidShamis/XChange,andre77/XChange,stevenuray/XChange,nopy/XChange,jheusser/XChange,timmolter/XChange,Panchen/XChange,chrisrico/XChange,anwfr/XChange,evdubs/XChange,npomfret/XChange,douggie/XChange,dozd/XChange,TSavo/XChange,stachon/XChange