Visual Studio compliance

int32_t type and lround function do not exist in VS.
Tested with VS2010 and VS2012
Fix stereo
Added soft knobs feature
Added expression pedal in PsycheFilter
Added Tremolo in patch registry
Merge branch 'master' of https://github.com/blondinou/OwlPatches

Conflicts:
	includes.h
Merge pull request #10 from sgissinger/master

Visual Studio compliance
inverted expression pedal value so that drive is multiplied by 1 if no pedal is attached
Merge conflict repair