message: Add _SC_GETPW_R_SIZE_MAX
diff: @@ -18,6 +18,7 @@ pub const _SC_PAGE_SIZE: c_int = 30;
  // ...
  pub const _SC_RE_DUP_MAX: c_int = 44;
  // ...
  +pub const _SC_GETPW_R_SIZE_MAX: c_int = 70;
  pub const _SC_LOGIN_NAME_MAX: c_int = 71;
  pub const _SC_TTY_NAME_MAX: c_int = 72;
  // ...
  @@ -40,6 +41,7 @@ pub extern "C" fn sysconf(name: c_int) -> c_long {
  _SC_VERSION => 200809,
  _SC_PAGESIZE => 4096,
  _SC_RE_DUP_MAX => 32767,
  + _SC_GETPW_R_SIZE_MAX => -1,
  _SC_LOGIN_NAME_MAX => 256,
  _SC_TTY_NAME_MAX => 32,
  _SC_SYMLOOP_MAX => -1,
  