raise max_connections default to avoid conflicts with apache max_childs settings (Bug #23883)

   "If there is more than this number of interrupted connections from a host this host will be blocked from further connections.",

   (gptr*) &max_connect_errors, (gptr*) &max_connect_errors, 0, GET_ULONG,

    REQUIRED_ARG, MAX_CONNECT_ERRORS, 1, ~0L, 0, 1, 0},

  // Default max_connections of 151 is larger than Apache's default max

  // children, to avoid "too many connections" error in a common setup

  {"max_connections", OPT_MAX_CONNECTIONS,

   "The number of simultaneous clients allowed.", (gptr*) &max_connections,

   (gptr*) &max_connections, 0, GET_ULONG, REQUIRED_ARG, 100, 1, 16384, 0, 1,

   (gptr*) &max_connections, 0, GET_ULONG, REQUIRED_ARG, 151, 1, 16384, 0, 1,

   0},

  {"max_delayed_threads", OPT_MAX_DELAYED_THREADS,

   "Don't start more than this number of threads to handle INSERT DELAYED statements. If set to zero, which means INSERT DELAYED is not used.",