Log Message:
xmp: Update to 4.1.0

Switch to native audio drivers for NetBSD and Solaris, which it has,
somehow.

4.1.0 (20160719):
	- Requires libxmp 4.4
	- Add option to force tracker emulation
	- Add option to use simulated Amiga mixers
	- Add option to set the maximum number of virtual channels
	- Add command to switch between standard and classic mixers
	- Add command to display current mixer type
	- Fix default amplification factor
	- Fix module-specific configuration file options
	- Fix screen corruption when module uses more than 255 virtual
	  channels (reported by Lionel Debroux)
	- Remove option --offset-bug-emulation

4.0.11 (20160306):
	- Mark surround channels in channel list
	- Address errors reported by Coverity Scan