2.99 ScriptFu: scripts: enhance: move grid-system.scm to repo gimp-data-extras
The plugin is ancient, dating from before 1998.
Search the ChangeLogs for "grid-system" for some history. Here I summarize the ChangeLogs and add more arguments.
It has not been registered in the menus since before 2.4. Thus it can only be called by other plugins.
It has an obscure GUI, where a user enters a text for a scheme list e.g. "'(1 g 1)".
It has been replaced by another plugin for rendering a grid.
It is one of the last scripts that use SF-VALUE, which should be obsoleted.
There don't seem to be any tutorials for using it on the web.
The tooltip for the plugin is opaque.
Automated testing of scripts in the GIMP repo encounters it and generates noise (if the script is really obsolete.)
Thus it should be moved to the repo GNOME/gimp-data-extras.
Then if someone wants to use it in GIMP 3, they will need to fix its use of SF-VALUE.
I could be wrong. If you have more knowledge about this plugin, please speak up.