[Ohrrpgce] SVN: teeemcee/8410 sound backend cleanup: remove sound_load(num) overload, add sound_slot_w

[subversion at HamsterRepublic.com]

teeemcee
2017-02-19 06:38:17 -0800 (Sun, 19 Feb 2017)
204
sound backend cleanup: remove sound_load(num) overload, add sound_slot_with_id

Also, music_sdl was treating loopcount as a boolean (play forever
verses once); change that. (loopcount isn't used anywhere)
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U   wip/allmodex.bas
U   wip/allmodex.bi
U   wip/common.bi
U   wip/common.rbas
U   wip/music.bi
U   wip/music_allegro.bas
U   wip/music_audiere.bas
U   wip/music_sdl.bas
U   wip/music_silence.bas