Log message:
Don't set build time dependency for a library that is very likely used
via dynamic linkage. Fixes run time linkage of adplug. Bump revision of
the latter.

Log message:
Initial import of adplug-2.1 from pkgsrc-wip, packaged by
jfranz at bsdprojects dot net.

AdPlug is a free, cross-platform, hardware independent AdLib sound player
library, mainly written in C++ and released under the LGPL. AdPlug plays
sound data, originally created for the AdLib (OPL2) audio board, directly
from its original format on top of an OPL2 emulator or by using the real
hardware. No OPL chip is required for playback.