On CI we build using the bundled Quazip, and automatically set
-DBUILD_STATIC_LIBS to true, so it build iconfix statically as well.
However, since we recently added support for using the system quazip,
this flag is not set anymore, and PolyMC fails to run because iconfix
neither is statically linked, nor it creates a .so file for dynamic
linking.
Since most other libs are built statically, we should make this one
static as well. Maybe we should consider allowing for dynamic linking of
libs now that quazip is not much of an issue anymore. :^)
* Added install commands to the libraries instead of force installing files
* Most of the application cmake stuff moved to top level
* RPATH should now be set/cleared correctly
* Contains a fix for GH-1780
