**    git CMD     Do the "git export" or "git status" command (which every
**                is specified by CMD) on all repositories for which
**                a Git mirror has been previously established.
**
**    info        Run the "info" command on all repositories.
**
**    pull        Run a "pull" operation on all repositories.  Only the
**                --verbose and --share-links options are supported.
**
**    push        Run a "push" on all repositories.  Only the --verbose
**                option is supported.
**
**    rebuild     Rebuild on all repositories.  The command line options
**                supported by the rebuild command itself, if any are
**                present, are passed along verbatim.  The --force and
**                --randomize options are not supported.
**
**    sync        Run a "sync" on all repositories.  Only the --verbose
**                and --unversioned and --share-links options are supported.
**
**    set         Run the "setting" or "set" commands on all
**                repositories.  These command are particularly useful in
**                conjunction with the "max-loadavg" setting which cannot
**                otherwise be set globally.
**
**    unset       Run the "unset" command on all repositories

    }
  }else if( strncmp(zCmd, "push", n)==0 ){
    zCmd = "push -autourl -R";
    collect_argument(&extra, "verbose","v");
  }else if( strncmp(zCmd, "pull", n)==0 ){
    zCmd = "pull -autourl -R";
    collect_argument(&extra, "verbose","v");
    collect_argument(&extra, "share-links",0);
  }else if( strncmp(zCmd, "rebuild", n)==0 ){
    zCmd = "rebuild";
    collect_argument(&extra, "cluster",0);
    collect_argument(&extra, "compress",0);
    collect_argument(&extra, "compress-only",0);
    collect_argument(&extra, "noverify",0);
    collect_argument_value(&extra, "pagesize");

    zCmd = "unset -R";
    collect_argv(&extra, 3);
  }else if( strncmp(zCmd, "fts-config", n)==0 ){
    zCmd = "fts-config -R";
    collect_argv(&extra, 3);
  }else if( strncmp(zCmd, "sync", n)==0 ){
    zCmd = "sync -autourl -R";
    collect_argument(&extra, "share-links",0);
    collect_argument(&extra, "verbose","v");
    collect_argument(&extra, "unversioned","u");
  }else if( strncmp(zCmd, "test-integrity", n)==0 ){
    collect_argument(&extra, "db-only", "d");
    collect_argument(&extra, "parse", 0);
    collect_argument(&extra, "quick", "q");
    zCmd = "test-integrity";