first shot at fixing issue #218: error when trying to install on OSX. See if using a temporary text file will work around the bug of plutil creating empty files

port moonlib/mknob, and fix an iemgui dialog bug with empty strings not getting changed to zeroes for numeric fields

protect against superfluous messages sent from guis on graph-on-parent subcanvas that lies outside the bounding box

mil authored 8 years ago and Jonathan Wilkes committed 8 years ago

Similar to #214 -- bug will only occur if the canvas label overlaps the GOP area

another attempt to fix #214. A gui object outside of the GOP area will still send graphical updates to the GUI.  This needs to be addressed on the C side, but for now this fix should work