90872e2b6c
Consider this as a first step towards the integration of Qt5 into nixpkgs, it does not yet intends to replace Qt4 on every packages even if possible. My goal here is to have a first derivation in common between people who needs qt5 for development purposes. The derivation has been written from scratch but I took care to read at the version 4 to re-integrate some patches which are still compatible. However, I did not had enough time to test gtkStyle and flashplayerFix as I do not use any of them. Also, OSX users will have to do some extra work because I do not have any mac. Finally, as some configure flags have changed and in an hope to provide a clear package definition before it becomes mature, I voluntary added some flags which are default. Once every option will be mastered, we will just have to redo a pass on qt5 configure flags and remove the ones which are set by default.