scribus: fix recipe and enable x86_64.
scribus: fix recipe and enable x86_64.

* remove rpath, don't remove headers, plugins.

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