dsound bug fixes

[Robert Reif]

dsound.diff:
Device enumeration callbacks should return a NULL guid for default
devices.
Fixed some volume and pan cases.
Added missing property set.
Fixed capture notification bug.

test.diff:
Added better tests for volume and pan.
Added capture notification test.
Fixed capture query notification test bug.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: tests.diff
Type: application/x-unknown-content-type-diff_auto_file
Size: 8101 bytes
Desc: not available
Url : http://www.winehq.org/pipermail/wine-patches/attachments/20030912/760c2bf4/tests.bin
-------------- next part --------------
A non-text attachment was scrubbed...
Name: dsound.diff
Type: application/x-unknown-content-type-diff_auto_file
Size: 10860 bytes
Desc: not available
Url : http://www.winehq.org/pipermail/wine-patches/attachments/20030912/760c2bf4/dsound.bin