Examples to illustrate the non linearities of a very simple hydraulic circuit.
test with ThreeWayValveMotor.mo
fixed bug in pipes partial that caused pipe mixing volumes to have a default 'prescribedheatflow' parameter = true. This parameter was not propagated to the top. This caused issues when coupling a fixed temperature boundary condition for zero flow. For pumps this parameter is now correctly overridden and set to true since pumps use a prescribedheatflow.
removed some 'replaceable's from package definitions in pumps.examples to avoid cluttered view
add tests
Merge branch 'issue32_NonLinearHydraulicSystem' of https://github.com/open-ideas/IDEAS into issue32_NonLinearHydraulicSystem
correct wrong flow of the different legs of ThreeWayValveMotor.mo
remove obsolete examples and add unit tests for examples of Movers package.
remove obsolete examples.
Merge remote-tracking branch 'openideas/issue32_NonLinearHydraulicSystem' into Annex60

Conflicts:
	IDEAS/Fluid/Valves/ThreeWayValveMotor.mo