Recommended version

[Waldek Hebisch]

What is currently recommended GCL version and where I can
find it?  There is 2.6.12 release, but testing FriCAS with
it I get heisenbugs: failures that go away when I recompile
offending code at speed 0 and safety 3.

As 2.6.12 is old I wonder if this still recommended
(I would like to test with relevant version).

At various places I see 2.6.pre13, is this what users are
supposed to use?  If yes want is way to get it.

Note that my testing setup puts Lisp in non-standard location,
so I want to compile from sources to configure it for
location.  Also, my past experience was that versions
build from source worked better than binaries...

-- 
                              Waldek Hebisch