[LyX/master] Add default TransformID enum value

[Pavel Sanda]

On Sat, Nov 28, 2020 at 08:05:14PM +0100, Jean-Marc Lasgouttes wrote:
> Le 26/11/2020 ?? 22:38, Pavel Sanda a écrit :
> >>I'm not an expert in build systems, so my patch doing this will require some
> >>correction.
> >
> >Autotools looks fine on a first sight, JMarc might have some comment.
> 
> I have removed the unneeded autoconf parts and remove the machinery to build
> a boost library (only regex needed it). The gain is only 2M out of 23.

I am somewhat confused here. If we don't need to build boost anymore,
why we include it at all?

Pavel