rust-chg: depend on log and tokio_timer
I'll start porting the daemon management functions from chg of C, which
will be difficult to debug without some logging facility. AFAIK, the log
crate is easy-to-use and widely used.
tokio_timer provides sleep() helper to be used while spawning a server
process.
cat >> $HGRCPATH <<EOF
[extensions]
narrow=
[ui]
ssh=python "$TESTDIR/dummyssh"
[experimental]
changegroup3 = True
EOF