[tlbuild] initial test builds for TL'15 (no commits)

[Marc Baudoin]

Karl Berry <karl at freefriends.org> écrit :
> Hi everyone - more updates are likely to come, but it would be good to
> make a first attempt at building the TeX Live sources for this year's
> release.

Evereything's fine on NetBSD/amd64 6.1.5.  Didn't try on i386
(because I'm building in a slow VM, I will wait until binaries
are needed) but it should also be fine.