Corrected build problem with new AdPlug versions

The previous releases had problems due to a change in a minor release of AdPlug. This should support both older and newer releases.

Problem with an incorrect argument passed to the OPL emulator.

This is the first stable release of sadplay. Sorry, no binaries. You will have to be nostalgic and compile from scratch. 😺

Changes:

• 2b9abf1 Added build script

This list of changes was auto generated.