OPTICKS-1587:Provide Option To Import AOI Layers/Elements Files Using Pixel Coordinates.

git-svn-id: svn://svn.code.sf.net/p/opticks/code/trunk/future@18712 6d0fddd1-9640-0410-91f9-aa98d5e64d34
Update version number for 4.12.0

git-svn-id: svn://svn.code.sf.net/p/opticks/code/trunk/future@18713 6d0fddd1-9640-0410-91f9-aa98d5e64d34
Update version number for 4.12.0rc1 (forgot rc1 in initial commit)

git-svn-id: svn://svn.code.sf.net/p/opticks/code/trunk/future@18714 6d0fddd1-9640-0410-91f9-aa98d5e64d34
Added .gitignore files to match svnignore properties