Delete EngineEffectRack after removing
set m_pEngineEffectRack NULL after remove
move EngineEffectRack cration to addToEngine()
Clear rack lists in EffectChainManager::~EffectChainManager()
Remove EngineEffects and EngineEffectsRack directly when engine thread is already down
delete request if EffectsManager::writeRequest() fails to add message
delete EngineEffectChain when removing from rack
delete WTrackTableView::m_pTrackInfo
removed debug leftover
Removed redundant clear calls
use qDeleteAll in EngineBuffer
delete m_pSampleRate
Fix double initalisation
declerare var where it is used
Use QString for EngineAux
Cleared waveform vector in destructor
Merge remote-tracking branch 'upstream/master' into seal_leaks

Conflicts:
	src/dlgprefeq.cpp
Merge remote-tracking branch 'upstream/master' into seal_leaks

Conflicts:
	src/analyserwaveform.cpp
	src/waveform/waveform.cpp
Merge remote-tracking branch 'upstream/master' into seal_leaks

Conflicts:
	src/effects/effectsmanager.cpp
delete m_low and m_high in GraphicEQEffectGroupState