[Groff] new requests .ds1, .as1, and .ami

[Werner LEMBERG]

[For reasons not known to me yet, some mails are not delivered to this
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 an interference between my provider's mail program and the mailing
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Dear friends,


to properly support Sun's mm macros with GNU eqn, it was necessary to
add two new requests: .ds1 and .as1 which are similar to .ds and .as
but expand in compatibility mode.

The problem was that string register `10', defined and used by eqn
internally, is directly accessed by Sun's mm macros, causing problems
with long names.

Additionally, I've added the .ami request (append to macro
indirectly).  Using this, trace.tmac can trace calls to .am also.
Finally, trace.tmac now supports compatibility mode.

Enjoy!


    Werner