Improve the portability. The Windows version of "echo" does
not support single quotes as a quoting character and therefore
fails and prevents updates in the Windows nightly build.
char *game_days = ""; /* days game is running */
char *game_hours = ""; /* hours game is running */
-char *pre_update_hook = "";
-+char *pre_update_hook = "echo '-=< pre_update_hook executed here >=-'";
++char *pre_update_hook = "echo pre_update_hook executed here";
int max_idle = 15; /* session dies after max_idle minutes idle */
int sect_mob_max = 127; /* sector mobility limits */