StretchTool.h: 2012-01-18 Steven Lambright - Fixed a bug that caused the...

StretchTool.h: 2012-01-18 Steven Lambright - Fixed a bug that caused the stretch pair line edits to not update properly in grey mode when the color mode band selection was set to all. Also, fixed layout of stretch options to correctly squeeze widgets left. Fixes #640. 

git-svn-id: http://subversion.wr.usgs.gov/repos/prog/isis3/trunk@3907 41f8697f-d340-4b68-9986-7bafba869bb8