Refactor API calls after the python interface

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
Merge branch 'master' of github.com:cmatsuoka/libxmp-java

Conflicts:
	examples/player/src/com/example/player/ModPlayer.java

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>