installer: force uninstall before install.
installer: force uninstall before install.

In theory, the installer should already do this, but if we
aren't caferful with our component GUID'ing (or so the docs say),
it can break.

This method will force the uninstallation to happen before
installation.

This should fix the issue where stale files from old versions
are left behind.

LuAPi/mumble,mbax/mumble,austinliou/mumble,niko20010/mumble,Lartza/mumble,austinliou/mumble,bheart/mumble,mbax/mumble,SuperNascher/mumble,SuperNascher/mumble,unascribed/mumble,Githlar/mumble,LuAPi/mumble,SuperNascher/mumble,SuperNascher/mumble,Zopieux/mumble,SuperNascher/mumble,unascribed/mumble,Keridos/mumble,austinliou/mumble,LuAPi/mumble,Githlar/mumble,unascribed/mumble,SuperNascher/mumble,LuAPi/mumble,niko20010/mumble,Githlar/mumble,Natenom/mumble,niko20010/mumble,Lartza/mumble,Keridos/mumble,Keridos/mumble,Zopieux/mumble,LuAPi/mumble,ccpgames/mumble,Githlar/mumble,Githlar/mumble,bheart/mumble,mbax/mumble,Zopieux/mumble,Natenom/mumble,Zopieux/mumble,richard227/mumble,ccpgames/mumble,feld/mumble,bheart/mumble,Zopieux/mumble,SuperNascher/mumble,bheart/mumble,ccpgames/mumble,niko20010/mumble,richard227/mumble,unascribed/mumble,Lartza/mumble,LuAPi/mumble,bheart/mumble,ccpgames/mumble,Natenom/mumble,Githlar/mumble,feld/mumble,richard227/mumble,unascribed/mumble,Lartza/mumble,Natenom/mumble,LuAPi/mumble,richard227/mumble,feld/mumble,unascribed/mumble,richard227/mumble,bheart/mumble,austinliou/mumble,feld/mumble,niko20010/mumble,richard227/mumble,richard227/mumble,austinliou/mumble,Keridos/mumble,unascribed/mumble,austinliou/mumble,ccpgames/mumble,mbax/mumble,Keridos/mumble,SuperNascher/mumble,Natenom/mumble,bheart/mumble,richard227/mumble,unascribed/mumble,Zopieux/mumble,austinliou/mumble,Keridos/mumble,Lartza/mumble,ccpgames/mumble,Lartza/mumble,niko20010/mumble,niko20010/mumble,Zopieux/mumble,Keridos/mumble,LuAPi/mumble,mbax/mumble,Lartza/mumble,Githlar/mumble,ccpgames/mumble,Natenom/mumble,Githlar/mumble,ccpgames/mumble,feld/mumble,feld/mumble,Natenom/mumble,mbax/mumble,feld/mumble,LuAPi/mumble,Keridos/mumble,mbax/mumble,SuperNascher/mumble,niko20010/mumble,bheart/mumble,Zopieux/mumble,Lartza/mumble,Natenom/mumble,mbax/mumble,feld/mumble,austinliou/mumble