Cropping relatively to the full image contents is a common usage (it is
in fact the "Crop to Content" feature we have in the Image menu) so I
found it a bit frustrating that these 2 functions only allow to crop
relatively to a single drawable.
Therefore, I make NULL an acceptable input which will default to
cropping to the full image content instead.
- Clean up a bit the 2 procedures' descriptions and add more info in
gimp_image_autocrop() description to explain how the input drawable is
used.
- Rename gimp_image_autocrop_layer() to gimp_image_autocrop_selected_layers(),
which makes it clearer.
Rename plug_in_compat.pdb to image_autocrop.pdb so we retain commit history.
All procedures defined there are related to autocrop.
- made internal, not plugins
- renamed from plug-in- to gimp-image-
- exposed in libgimp
If we need plugin compatibility PDB group in the future,
a starting template can be recovered from plug_in_compat.pdb 2.10 or late 2.99.
Fixed plugins that call. The C plugin now calls libgimp instead of a PDB procedure.
