v.io/x/devtools/vbinary: use runutil.Sequence.
v.io/x/devtools/vbinary: use runutil.Sequence.

Change-Id: Iac51d1a5182c555ed7e7c8a3b711952af8ca0b72

vanadium/go.devtools,vanadium/go.devtools,vanadium/go.devtools