BLVII-46 : Create toString for ImutableRectangularIntegerROI to aid
debugging
Merge branch '8.30.BLVII-46' of ssh://dasc-git.diamond.ac.uk/gda/gda-epics into 8.30.BLVII-46

Conflicts:
	uk.ac.gda.epics/src/gda/device/detector/nxdetector/roi/ImutableRectangularIntegerROI.java