Bug#901377: skimage: FTBFS and Debci failure with NumPy 1.14

[Lumin]

> Since the recent upload of python-numpy on 2018-05-05, skimage has been 
> failing its autopkgtests [1] and has now also started to FTBFS in 
> unstable [2] with several errors similar to the following:

I see some changes adapting numpy 1.14 api change at upstream repo,
however they doesn't apply without change. Maybe we'd better wait
for the maintainer to upload skimage 0.14, which was updated for
numpy 1.14 api change.