scalar: enable path-walk during push via config

Repositories registered with Scalar are expected to be client-only
repositories that are rather large. This means that they are more likely to
be good candidates for using the --path-walk option when running 'git
pack-objects', especially under the hood of 'git push'. Enable this config
in Scalar repositories.

Signed-off-by: Derrick Stolee <stolee@gmail.com>

scalar.c

@@ -170,6 +170,7 @@ static int set_recommended_config(int reconfigure)
  { "core.autoCRLF", "false" },
  { "core.safeCRLF", "false" },
  { "fetch.showForcedUpdates", "false" },
+ { "push.usePathWalk", "true" },
  { NULL, NULL },
  };
  int i;