(a) to make H8 configuration come out right (first attempt since
conversion to texinfo conditionals);
(b) to exploit yesterday's makeinfo bugfix, using conditionals in menus
rather than multiple alternative menus.
2. Update H8 text to refer to H8/500 as well as H8/300.
3. Define config file gdb-config.texi as a link in Makefile, based on a
DOC_CONFIG variable.
Formatting these files now depends on the recently designed
Texinfo conditionals: to format successfully, you must use very
recent versions (not yet distributed by FSF) of texinfo.tex and makeinfo.c.
The new Texinfo commands are @set, @clear, @ifset, @ifclear, and @value.
Recent texinfo-2 Beta distributions contained partial implementations.
texi2roff does not yet support these commands.
There are miscellaneous clean-ups to Makefile.in as well.
