Log Message:
p5-GraphViz2: update to 2.47.

2.47  2018-02-23T10:06:00
	- Adopt github pull request from ThornyS, with thanx. This is part of CPAN via \ 
the PRC aka
		Pull Request Challenge.
	- Adjust tests in t/test_more_methods.t to work with BSD-based systems, and for \ 
systems
		which don't use '/' as a dir separator. As a consequence, running the tests no \ 
longer
		leaves test output files in t/.
	- Fix some code in Config.pm which triggered a warning from Perl which said:
		'panic: attempt to copy freed scalar ...'.