tools: making "git veyron status" more efficient (replacing expensive calls to "hg" and "git" with system calls)
tools: making "git veyron status" more efficient (replacing expensive
calls to "hg" and "git" with system calls)

Change-Id: I12d279c5ac86f7787ea3fc09f0b57180a35b4ad2

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