Now use gimp-resource-delete
Drive-by fix of bad call to gimp-context-set-pattern.
Fixes other calls to gimp-font-delete, etc. in a test script.
Partly fixes 9867.
So procedures can declare args and GimpProcedureDialog show chooser
widgets
Fix so is no error dialog on id_is_valid for resources
Palette.pdb changes and testing
Memory mgt changes
Gradient pdb
Font and Pattern tests
Test brush, palette
Cleanup, remove generator
Rebase, edit docs, install test-dialog.py
Whitespace, and fix failed distcheck
Fix some clang-format, fix fail distcheck
Fix distcheck
Cleanup from review Jehan
