Sound System Rework: Phase 2

. Performance boost
  (Completely non-blocking between Sound thread and CPU thread, in the meantime keeping them thread safe)

. Both 32KHz & 48KHz sound can be handled properly now
  (But up-sampling is still not implemented, and I don't think any game requires it.)

. Strategy adjustment
  When your PC is *NOT* capable to run the game at 100%:
  >> DSound    Could yield more fluent sound than OpenAL sometimes, but you will lose the sync between video & audio (since audio is played before video to guarantee fluency)
  >> OpenAL    Ensures video & audio are always sync'ed, but sound could be intermittent(to let slow video catch up)

. Changed default frame limit to: Auto
  (Somehow this can dramatically decrease the chance of wiimote desync in game NSMB)

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4724 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/Core/Src/ConfigManager.cpp

@@ -234,7 +234,7 @@ void SConfig::LoadSettings()
 		ini.Get("Core", "RunCompareServer",	&m_LocalCoreStartupParameter.bRunCompareServer,	false);
 		ini.Get("Core", "RunCompareClient",	&m_LocalCoreStartupParameter.bRunCompareClient,	false);
 		ini.Get("Core", "TLBHack",			&m_LocalCoreStartupParameter.iTLBHack,			0);
-		ini.Get("Core", "FrameLimit",		&m_Framelimit,									1);
+		ini.Get("Core", "FrameLimit",		&m_Framelimit,									0); // auto frame limit by default
 
 		// Plugins
 		ini.Get("Core", "GFXPlugin",  &m_LocalCoreStartupParameter.m_strVideoPlugin,	m_DefaultGFXPlugin.c_str());