Fix use of git-whatchanged to git-log

[hyperupcall]

This PR fixes the issue found in #1210.

Error:

'git whatchanged' is nominated for removal.
If you still use this command, please add an extra
option, '--i-still-use-this', on the command line
and let us know you still use it by sending an e-mail
to <[email protected]>.  Thanks.
fatal: refusing to run without --i-still-use-this

According to the git-whatchanged manpage:

New users are encouraged to use git-log[1] instead. The whatchanged command is essentially the same as git-log[1] but defaults to showing the raw format diff output and skipping merges.

This changes the git whatchanged invocation to the git log --raw --no-merges replacement. I tested this on a test repository and the output is the same:

$ git whatchanged
commit 7769eb195aba87248c60ca980e7f79571595118b (branch-b)
Author: Edwin Kofler <[email protected]>
Date:   Wed Aug 27 14:00:08 2025 -0700

    b

:000000 100644 0000000 e69de29 A        b

commit dfee73d1cbc201d048fc1accee3aefccab87e489 (branch-a)
Author: Edwin Kofler <[email protected]>
Date:   Wed Aug 27 13:59:19 2025 -0700

    a commit

:000000 100644 0000000 e69de29 A        a

commit 5e09db44b2136b6dd1680c771e5d2048baafe9b3
Author: Edwin Kofler <[email protected]>
Date:   Wed Aug 27 13:59:07 2025 -0700

    main first commit

:000000 100644 0000000 e69de29 A        main

$ git log --raw --no-merges
commit 7769eb195aba87248c60ca980e7f79571595118b (branch-b)
Author: Edwin Kofler <[email protected]>
Date:   Wed Aug 27 14:00:08 2025 -0700

    b

:000000 100644 0000000 e69de29 A        b

commit dfee73d1cbc201d048fc1accee3aefccab87e489 (branch-a)
Author: Edwin Kofler <[email protected]>
Date:   Wed Aug 27 13:59:19 2025 -0700

    a commit

:000000 100644 0000000 e69de29 A        a

commit 5e09db44b2136b6dd1680c771e5d2048baafe9b3
Author: Edwin Kofler <[email protected]>
Date:   Wed Aug 27 13:59:07 2025 -0700

    main first commit

:000000 100644 0000000 e69de29 A        main

I also tested by running git-utimes and it showed output that looks right with no errors.

[spacewander]

That's what we need! Thank you very much!