[PATCH 10 of 10 V3] tests: use print_function in silenttestrunner.py

[Yuya Nishihara]

On Sat, 2 Apr 2016 22:13:55 -0700, Pierre-Yves David wrote:
> On 04/02/2016 09:41 PM, Pulkit Goyal wrote:
> > There will be an error in test-check-*.t tests as the imports are not
> > lexicographically sorted.  
> 
> Tests passed fine here,
> 
> Any idea of what is going on?

tests/*.py aren't covered by test-check-module-imports.t.