Log Message:
Fix comments.

Augment debug option arguments.

Explicitly select garbage collector.

Set dialogs and widgets to "athena" explicitly.
There are no "lucid" implementations; instead, configure will look for
Motif implementations, and fall back to Athena. The former is prone to
sneak in undeclared dependencies on Motif and (on sole platforms) xft.

Remove the patch that was supposed to fix this, but didn't.