Changes to 64 bit darwin local folder that works to compile an svn checkout on high sierra mac with checkout.gnomelib set to true. Can't compile imagemagick yet however. 1. adding gs3-devel.sh 2. Modifying local/gs3-setup.sh to have (commented out) lines for adding a custom SVN to environment. I needed svn v 1.9.9 for svn commands to work for me with the release kits and perhaps regular GS3 svn code too, so I would activate these lines by removing the comment signs.