Patch to allow passing --enable-tcpd or --disable-tcpd.

[jkroonza]

If passing --enable-tcpd and libwrap is not available, ./configure will fail.

If passing --disable-tcpd, libwrap will be completely ignore.

If not passed, current behaviour still applies.

Signed-off-by: Jaco Kroon jaco@iewc.co.za

[sawolf]

Looks good to me, thanks for the patch!