Audio Effects Presets API: Changes

The following header file(s) have changed between 3.0 and 3.1

**Table 1:** audioequalizerutility.h
Type	Class	Change
New public method	`CAudioEqualizerUtility`	`static CAudioEqualizerUtility* NewL(CMidiClientUtility& aUtility);`

**Table 2:** environmentalreverbutility.h
Type	Class	Change
New public method	`CEnvironmentalReverbUtility`	`static CEnvironmentalReverbUtility* NewL(CMidiClientUtility& aUtility);`