maintaining own set of patches

[Stefan Schaeckeler <schaecsn%gmx.net@localhost>]

Hi all,

For some programs, I have my own set of patches. Putting them in the patch/ 
directory is not enough, the filename must be also added to distinfo.

What if the package is updated? Cvs update does not touch distinfo because it 
modified.

How can I integrate my own set of patches into pkgsrc?

 Stefan