Fix rules for --with-<flavor> in configure.in
Fix rules for --with-<flavor> in configure.in

no flags: build all detected flavors
--with-foo: build only flavor foo, even if other flavors could be built
--without-foo: build all detected flavors except foo
--with-foo --without-bar: just as if only --with-foo were supplied

cdsteinkuehler/linuxcnc,cdsteinkuehler/MachineKit,ArcEye/machinekit-testing,ArcEye/machinekit-testing,EqAfrica/machinekit,unseenlaser/machinekit,cdsteinkuehler/MachineKit,araisrobo/machinekit,araisrobo/machinekit,kinsamanka/machinekit,Cid427/machinekit,strahlex/machinekit,bobvanderlinden/machinekit,ArcEye/MK-Qt5,unseenlaser/machinekit,mhaberler/machinekit,ArcEye/MK-Qt5,Cid427/machinekit,kinsamanka/machinekit,araisrobo/machinekit,RunningLight/machinekit,ArcEye/MK-Qt5,cdsteinkuehler/linuxcnc,strahlex/machinekit,EqAfrica/machinekit,strahlex/machinekit,EqAfrica/machinekit,ArcEye/machinekit-testing,kinsamanka/machinekit,Cid427/machinekit,araisrobo/machinekit,araisrobo/machinekit,EqAfrica/machinekit,mhaberler/machinekit,unseenlaser/machinekit,ArcEye/MK-Qt5,RunningLight/machinekit,kinsamanka/machinekit,ArcEye/machinekit-testing,strahlex/machinekit,cdsteinkuehler/MachineKit,EqAfrica/machinekit,RunningLight/machinekit,cdsteinkuehler/MachineKit,mhaberler/machinekit,araisrobo/machinekit,Cid427/machinekit,unseenlaser/machinekit,RunningLight/machinekit,kinsamanka/machinekit,unseenlaser/machinekit,unseenlaser/machinekit,Cid427/machinekit,kinsamanka/machinekit,cdsteinkuehler/linuxcnc,RunningLight/machinekit,RunningLight/machinekit,kinsamanka/machinekit,unseenlaser/machinekit,Cid427/machinekit,ArcEye/MK-Qt5,EqAfrica/machinekit,bobvanderlinden/machinekit,mhaberler/machinekit,ArcEye/machinekit-testing,EqAfrica/machinekit,strahlex/machinekit,mhaberler/machinekit,Cid427/machinekit,kinsamanka/machinekit,ArcEye/MK-Qt5,ArcEye/MK-Qt5,bobvanderlinden/machinekit,bobvanderlinden/machinekit,ArcEye/MK-Qt5,bobvanderlinden/machinekit,cdsteinkuehler/linuxcnc,ArcEye/machinekit-testing,mhaberler/machinekit,strahlex/machinekit,unseenlaser/machinekit,cdsteinkuehler/MachineKit,araisrobo/machinekit,EqAfrica/machinekit,RunningLight/machinekit,cdsteinkuehler/linuxcnc,ArcEye/machinekit-testing,cdsteinkuehler/MachineKit,bobvanderlinden/machinekit,mhaberler/machinekit,strahlex/machinekit,Cid427/machinekit,araisrobo/machinekit,bobvanderlinden/machinekit,RunningLight/machinekit,cdsteinkuehler/linuxcnc,bobvanderlinden/machinekit,mhaberler/machinekit,araisrobo/machinekit,ArcEye/machinekit-testing