Support --with-pkgversion and --with-bugurl

[Roland McGrath]

>  define format-me

This actually now has no other user (it used to be used for NOTES too, but
we punted that file).  So it might as well just be direct commands in the
INSTALL target.

>  @rm -f $@
> -makeinfo --no-validate --plaintext --no-number-sections $< -o $@
> +makeinfo --no-validate --plaintext --no-number-sections \
> +	-I$(common-objpfx)manual $< -o $@

The second line should be indented to line up with the first argument,
not just with a tab.

> +INSTALL: manual/install.texi manual/macros.texi \
> +	$(common-objpfx)manual/pkgvers.texi
> +	$(format-me)

Likewise in a continuation line, the second line of dependencies should be
indented to line up with the first dependency.  In these cases, it matters
even more, because a continuation line as you wrote it looks a lot like
it's a command line.

Otherwise all good.


Thanks,
Roland