* Components with multiple "converts" were rendered with all of them overlapping instead
of just one.
* Schematics missing a -cache.lib resulted in unnecessary renaming suggestions.
* The dialog title "Conflicts Checking" is inaccurate now (as we're checking for more than
just conflicts) and also somewhat awkward, unidiomatic GUI English; I renamed it to
"Project Rescue Helper".
* Add code to test if any of the components in the schematic cache have been changed
in the component libraries.
* Prompt user to accept or reject components when changes are found.
* If the user chooses to use the components in the cache, create a new library with the old
components and add it to the beginning of the component library list so the schematic will
not be changed.
* Create dialogs to handle user feedback and status.
jean-pierre charras
Chis Pavlina