Subversion file-based authorization

Hi everyone,

Is there a way of ensuring that only a user (or a group of users) can
change a specific file in a given directory? For example, suppose I have
these files on a given directory:

- abc.c
- abc.h
- vernum.h

and I want user harry to change vernum.h but not abc.c or abc.h. All
other users except harry can change abc.c or abc.h. Is there a way to
change the authz file to put this kind of authorization?

Best regards,

-- 
Miguel Rentes
/Software Engineer/
EFACEC - Sistemas de Electronica, SA
/ID/GR/
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