Revise `shapePhoto()` to not use `TkPhotoGetValidRegion()`#8

chrstphrchvz wants to merge 4 commits intodkfellows:trunkdkfellows/shape:trunkfrom

chrstphrchvz:no-validregionchrstphrchvz/dkf-shape:no-validregionCopy head branch name to clipboard