Convert TNF licenses to new 2 clause variant

Remove advertising clause from all of my stuff.

Macro improvements.

Add standard TNF license, requested by cube@.

PR/18126: jnilsson at ludd dot luth dot se: add the revoke program

I have commited a different version than in the PR, it lacks a license
but if it warrants one we can stick the TNF standard on it.

PR/18126: jnilsson at ludd dot luth dot se: add the revoke program

I have commited a different version than in the PR, it lacks a license
but if it warrants one we can stick the TNF standard on it. It's just
a main() routine that calls revoke(2).

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