The maintainer-check target never really caught on, I think. Most
people don't run it, and that in turn annoys those who do. Also, it
doesn't provide much functionality.
I propose that we get rid of it and roll the functionality into the
regular build.
Specifically:
- Running duplicate_oids during the regular build was already discussed
elsewhere recently. There are some details to be resolved there, but
it's doable.
- Checking for tabs in SGML files can be run during the regular
documentation build without problems.
- The NLS checks can also be run during the regular NLS-enabled build.
That's it. Any concerns?