Update to v094r01 release.

byuu says:

Changelog:
- port: various compilation fixes for OS X [kode54]
- nall: added programpath() function to return path to process binary
  [todo: need to have ethos use this function]
- ruby: XAudio2 will select default game sound device instead of first
  sound device
- ruby: DirectInput device IDs are no longer ambiguous when VID+PID are
  identical
- ruby: OpenGL won't try and terminate if it hasn't been initialized
- gb: D-pad up+down/left+right not masked in SGB mode
- sfc: rewrote ICD2 video rendering to output in real-time, work with
  cycle-based Game Boy renderer
- sfc: rewrote Bus::reduce(), reduces game loading time by about 500ms
- ethos: store save states in {game}/higan/* instead of {game}/bsnes/*
- loki: added target-loki/ (blank stub for now)
- Makefile: purge out/* on make clean

ruby/audio/xaudio2.cpp

@@ -1,8 +1,3 @@
-/*
-  audio.xaudio2 (2010-08-14)
-  author: OV2
-*/
-
 #include "xaudio2.hpp"
 #include <windows.h>
 
@@ -132,7 +127,19 @@ public:
       return false;
     }
 
-    if(FAILED(hr = pXAudio2->CreateMasteringVoice( &pMasterVoice, 2, settings.frequency, 0, 0 , NULL))) {
+    unsigned deviceCount = 0;
+    pXAudio2->GetDeviceCount(&deviceCount);
+    if(deviceCount == 0) { term(); return false; }
+
+    unsigned deviceID = 0;
+    for(unsigned deviceIndex = 0; deviceIndex < deviceCount; deviceIndex++) {
+      XAUDIO2_DEVICE_DETAILS deviceDetails;
+      memset(&deviceDetails, 0, sizeof(XAUDIO2_DEVICE_DETAILS));
+      pXAudio2->GetDeviceDetails(deviceIndex, &deviceDetails);
+      if(deviceDetails.Role & DefaultGameDevice) deviceID = deviceIndex;
+    }
+
+    if(FAILED(hr = pXAudio2->CreateMasteringVoice(&pMasterVoice, 2, settings.frequency, 0, deviceID, NULL))) {
       return false;
     }
 
@@ -145,7 +152,7 @@ public:
     wfx.nAvgBytesPerSec = wfx.nSamplesPerSec * wfx.nBlockAlign;
     wfx.cbSize = 0;
 
-    if(FAILED(hr = pXAudio2->CreateSourceVoice(&pSourceVoice, (WAVEFORMATEX*)&wfx, XAUDIO2_VOICE_NOSRC , XAUDIO2_DEFAULT_FREQ_RATIO, this, NULL, NULL))) {
+    if(FAILED(hr = pXAudio2->CreateSourceVoice(&pSourceVoice, (WAVEFORMATEX*)&wfx, XAUDIO2_VOICE_NOSRC, XAUDIO2_DEFAULT_FREQ_RATIO, this, NULL, NULL))) {
       return false;
     }