Changed RSR_WAV and RSR_Resample_Good back to using alloca because only gcc/C99 like dynamic arrays. RSR_SpeedChange now uses new/delete in spite of the performance.

src/RageSoundReader_Resample_Good.cpp

@@ -667,7 +667,7 @@ int RageSoundReader_Resample_Good::Read( float *pBuf, int iFrames )
 
 	{
 		int iFramesNeeded = m_apResamplers[0]->NumInputsForOutputSamples(iFrames);
-		float pTmpBuf[iFramesNeeded * iChannels];
+		float *pTmpBuf = (float *) alloca( iFramesNeeded * sizeof(float) * iChannels );
 		int iFramesIn = m_pSource->Read( pTmpBuf, iFramesNeeded );
 		if( iFramesIn < 0 )
 			return iFramesIn;