RFC: AC_MSG_LOG()

[Lars J. Aas]

I've searched for a macro that simply dumps a message to config.log
without dumping anything to the console, but I couldn't find any.
I could of course use AS_CONFIG_LOG_FD and echo, but a standard macro
would be better.  config.log doesn't always automatically contain all
the essential information you need...

Does this sound like a good idea?

  Lars J