[tlbuild] once again test build

[Ken Brown]

On 4/5/2014 6:45 PM, Karl Berry wrote:
> Hi everyone - Peter has imported the final ICU 53.1 release, and
> luatex/mpost/xetex/etc. have been updated.  We don't expect further
> significant changes in the sources, mainly reactions to (your) bug
> reports.
>
> So, please try another test build and report problems.

Builds fine on {i386,x86_64}-cygwin (rev 33397).

Ken