mpris: improve bus name matching
mpris: improve bus name matching

- accept partial PLAYER and PLAYER.instance-PID names
- accept non-MPRIS bus names (for activation)
- precompile regexps

grawity/hacks,grawity/hacks,grawity/hacks,grawity/hacks,grawity/hacks,grawity/hacks,grawity/hacks