Add a fuction of default environments: Display2Init

Add a fuction of default environments: Display2Init
	modified:   bin/wish/Display2/Display2Init.wish

Source code fixed for OSX
	modified:   src/Tools/mrcImage/mrcImageFourierPowerSpectrum/src/mrcImageFourierPowerSpectrum.c

New functions were added: any directions
	modified:   src/Tools/mrcImage/mrcImageMeanFreePathCalc/inc/mrcImageMeanFreePathCalc.h
	modified:   src/Tools/mrcImage/mrcImageMeanFreePathCalc/src/argCheck.c
	modified:   src/Tools/mrcImage/mrcImageMeanFreePathCalc/src/init.c
	modified:   src/Tools/mrcImage/mrcImageMeanFreePathCalc/src/mrcImageMeanFreePathCalc.c
	modified:   src/Tools/mrcImage/mrcImageMeanFreePathCalc/src/mrcImageMeanFreePathCalc.html
	modified:   src/Tools/mrcImage/mrcImageMeanFreePathCalc/src/mrcImageMeanFreePathCalc.pane
	modified:   src/Tools/mrcImage/mrcImageMeanFreePathCalc/src/test/Makefile
	modified:   src/Tools/mrcImage/mrcImageMeanFreePathCalc/src/usage.c