graphviz-flowgraph: add --xpretty flowgraph,unlabelled variant#21085

Merged

bors merged 2 commits intorust-lang:masterfrom pnkfelix:pp-flowgraph-kill-labels

Jan 16, 2015

+50-36

Commits on Jan 12, 2015

add --xpretty flowgraph,unlabelled variant.
pnkfelix
committed

Commits on Jan 13, 2015

graphviz-flowgraph tests: use new --xpretty flowgraph,unlabelled option.
pnkfelix
committed