* remove ptrlist.c from lib/gamelib/Makefile.raw
* some modifications of char* -> const char*
* modify typedef of audio callback function to take a parameter of `void *psObj` rather than `AUDIO_SAMPLE *psSample` to minimize exposure (psSample->psObj was the only thing used by all callback functions anyway)
* modify all callback functions to match the new typedef's signature
* modify all functions calling callbacks to match the new signature (I think I've got them all, but since passing a pointer to a void* parameter doesn't generate any compiler errors/warnings I might have missed one, which would lead to undefined behaviour)
git-svn-id: svn+ssh://svn.gna.org/svn/warzone/trunk@1442 4a71c877-e1ca-e34f-864e-861f7616d084
6671750da0