... and 'SetBands()' to 'SetCurrentBands()'. We'll keep the 'Current' keyword in those properties which also have 'Supported' values.
It's pointless to have libmm-common around, just merge it into libmm-glib and make ModemManager depend on libmm-glib directly. At the end, the non-common stuff in libmm-glib is really minimal.