Shawn Hoffman 1332805bb6 Add headers required by XAudio2_7 to externals.
This makes all builds' audio compatible with downlevel Windows and removes
the need for developers to install the June 2010 DirectX SDK.
2014-08-23 11:03:07 -07:00
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2014-07-25 12:17:10 -04:00
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2014-03-14 13:51:23 -04:00