Build on Mac OS

[R. Victor Klassen]

I thought it made sense to begin with the most vanilla, default build, which as it turns out was stable.  

I could switch to unstable.  For the first while I expect to be mostly just poking about trying to learn how the code is spending its time.  

Here’s hoping... 

> 
> 
> Why are you building stable?
> 
> I modified the arguments passed to gwen for unstable/master. You can, while in a jhbuild shell, cd to the gwen directory and reconfigure it with --with-guis='gtk2' if you want to build stable, but ISTM it would make more sense for you to build unstable or master.
> 
> Regards,
> John Ralls