new patch file but same software version

[Stefan Wendler]

Hi,

I have modified the 'files/patch-vpnc.c'-file of 'security/vpnc' to make
it work with AVM FritzBOX VPNs. The version of vpnc stays the same.
Question is now, how to proceed here in creating a svn-diff that I can
submit? I know how to create and submit ports. So this is not an issue.
But I have only ever done it for newer software versions. Do I only bump
the PORTREVISION-attribute in the Makefile before creating the diff that
I then submit via bugzilla? Or is there any more to do here?

Thx for your support.

Cheers,
Stefan