Added Slackware platform detection.
Added Slackware platform detection.

jbfavre/ohai,dreamnite/ohai,sh9189/ohai,higanworks/ohai,Fodoj/ohai,shtzr840329/ohai,acaiafa/ohai,sh9189/ohai,adamleff/ohai,numericillustration/ohai,jaymzh/ohai,broadinstitute/ohai,bougyman/ohai,jbfavre/ohai,juliandunn/ohai,chef/ohai,btm/ohai,johnbellone/ohai,zshuo/ohai,http-418/ohai,tas50/ohai-1,broadinstitute/ohai,http-418/ohai,davide125/ohai,n-marton/ohai,shtzr840329/ohai,glennmatthews/ohai,btm/ohai,mattray/ohai,Juniper/ohai,adamleff/ohai,phreakocious/ohai,joyent/ohai,zshuo/ohai,tas50/ohai-1,jseely/ohai,dreamnite/ohai,jaymzh/ohai,acaiafa/ohai,jseely/ohai,chef/ohai,mattray/ohai,bougyman/ohai,zuazo-forks/ohai,nathwill/ohai,higanworks/ohai,johnbellone/ohai,numericillustration/ohai,n-marton/ohai,criteo-forks/ohai,phreakocious/ohai,juliandunn/ohai,cmluciano/ohai,Fodoj/ohai,cmluciano/ohai,MSOpenTech/ohai,375gnu/ohai,MSOpenTech/ohai,Juniper/ohai,glennmatthews/ohai,criteo-forks/ohai,davide125/ohai,375gnu/ohai,nathwill/ohai