osx: don't clean before & after rhosimulator build; introducing 'rake clean:osx' command (to be able to make a clean build)
osx: don't clean before & after rhosimulator build; introducing 'rake clean:osx' command (to be able to make a clean build)

rhosilver/rhodes-1,louisatome/rhodes,UIKit0/rhodes,louisatome/rhodes,UIKit0/rhodes,UIKit0/rhodes,UIKit0/rhodes,rhosilver/rhodes-1,UIKit0/rhodes,louisatome/rhodes,louisatome/rhodes,UIKit0/rhodes,louisatome/rhodes,louisatome/rhodes,rhosilver/rhodes-1,UIKit0/rhodes,UIKit0/rhodes,rhosilver/rhodes-1,louisatome/rhodes,UIKit0/rhodes,rhosilver/rhodes-1,louisatome/rhodes,UIKit0/rhodes,rhosilver/rhodes-1,louisatome/rhodes,rhosilver/rhodes-1,rhosilver/rhodes-1,rhosilver/rhodes-1,rhosilver/rhodes-1