1) remove SIGQUIT code -> doesn't exist under Windows
	GateSignalHandler.cc
2) casts to (double) for some troublesome fabs() calls
	GateSinogram.cc
3) "fstream.h" -> <fstream> in readers
	GateSourceVoxelImageReader.cc
	GateSourceVoxelInterfileReader.cc
	GateSourceVoxelTestReader.cc
4) hard code LITTLEENDIAN in Interfile writer
	GateToInterfile.cc
5) rint(x) ->  x - floor(x) < 0.5 ? floor (x) : ceil(x)
	GateToProjectionSet.cc
	GateToSinogram.cc
6) remove G4UItsch code..... just use session = new GateUIterminal; 
	Gate.cc