Some gentle preparatory changes toward merging Atom support into svn2rss.py.
Some gentle preparatory changes toward merging Atom support into svn2rss.py.

* contrib/hook-scripts/svn2rss.py: Change 'RSS' to generic term 'feed' in
    documentation, variable names, AND in the command line option '--rss-file',
    which now becomes '--feed-file'.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion