Make publish-all.sh print the git commit line too, for convenience.

cranelift/publish-all.sh

@@ -29,6 +29,7 @@ cargo update
 #
 # Note that libraries need to be published in topological order.
 
+echo git commit -a -m "Bump version to $version"
 for crate in filecheck cretonne frontend native reader wasm; do
     echo cargo publish --manifest-path "lib/$crate/Cargo.toml"
 done