grep: add recipe for version 3.0.
grep: add recipe for version 3.0.

moochris/haikuports,haikuports/haikuports,miqlas/haikuports,haikuports/haikuports,Begasus/haikuports,koletzky/haikuports,miqlas/haikuports,miqlas/haikuports,Begasus/haikuports,nielx/haikuports,nielx/haikuports,haikuports/haikuports,Begasus/haikuports,moochris/haikuports,Begasus/haikuports,koletzky/haikuports,nielx/haikuports,Begasus/haikuports,haikuports/haikuports,moochris/haikuports,koletzky/haikuports,haikuports/haikuports