[Gtk3] fix build on windows  * don't provide package names in project file
[Gtk3] fix build on windows
 * don't provide package names in project file

hwthomas/xwt,antmicro/xwt,lytico/xwt,iainx/xwt,mminns/xwt,mono/xwt,TheBrainTech/xwt,akrisiun/xwt,hamekoz/xwt,directhex/xwt,mminns/xwt,sevoku/xwt,cra0zy/xwt,residuum/xwt,steffenWi/xwt