Add player.sndshd to platform for convenience.

platform/base_scripts.pk3dir/sound/player.sndshd

@@ -0,0 +1,28 @@
+player.fall
+{
+	sample misc/null.wav
+}
+player.lightfall
+{
+	sample misc/null.wav
+}
+player.die
+{
+	sample misc/null.wav
+}
+player.gasplight
+{
+	sample misc/null.wav
+}
+player.gaspheavy
+{
+	sample misc/null.wav
+}
+player.waterexit
+{
+	sample misc/null.wav
+}
+player.waterenter
+{
+	sample misc/null.wav
+}