bug#51451: image-transform-original has a misleading name

[Stefan Kangas <stefan@marxist.se>]

Severity: minor

This is the docstring of `image-transform-original'.

    (image-transform-original)

    Display the current image with the original (actual) size and
    rotation.

From reading this it is clear what it does, but the command name makes
it sound like it will transform the original image.

These are the commands under the "s" key in image-mode:

    s 0             image-transform-reset
    s b             image-transform-fit-both
    s f             image-mode-fit-frame
    s h             image-transform-fit-to-height
    s m             image-transform-set-smoothing
    s o             image-transform-original
    s r             image-transform-set-rotation
    s s             image-transform-set-scale
    s w             image-transform-fit-to-width

Perhaps this would be less confusing if these commands were named
`image-display-*' instead of `image-transform-*'?

    s 0             image-display-reset-size
    s b             image-display-fit-both
    s f             image-mode-fit-frame
    s h             image-display-fit-to-height
    s m             image-display-set-smoothing
    s o             image-display-original-size
    s r             image-display-set-rotation
    s s             image-display-set-scale
    s w             image-display-fit-to-width

Doesn't that make more sense?