Made the IPowerReceptor direction aware
Merge branch 'mc1.5' into IPowerReceptorChange
Fixed bad parameter name in IPowerReceptor. Fixed call to powerRequest calling with getOpposite in PipeTransportPower
Merge branch 'IPowerReceptorChange' into mc1.5

Conflicts:
	common/buildcraft/transport/TileGenericPipe.java
Fir merge error