qt5.6: fix all policy errors
qt5.6: fix all policy errors

- Missing and mistyped provides
- Wrong install directories for some things
- Tested running ok (qbittorrent_qt5 compiles and runs)

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