[tex-live] biber in cygwin64 tl2016 builds

[Akira Kakuto]

Dear Ken,

> INFO - This is Biber 2.3
> INFO - Logfile is 'biber.tex.blg'
> ERROR - Cannot find control file 'biber.tex.bcf'! - did you pass the
> "backend=biber" option to BibLaTeX?
> INFO - ERRORS: 1

Here (win32)
pdflatex t.tex
biber t

INFO - This is Biber 2.5
INFO - Logfile is 't.blg'
INFO - Reading 't.bcf'
WARN - No data sources defined!

Best,
Akira