Split svnmerge.py's get_revlist_prop() into two functions.
Split svnmerge.py's get_revlist_prop() into two functions.

Patch suggested by: Giovanni Bajo <rasky@develer.com>

* contrib/client-side/svnmerge.py
  get_revlist_prop():
    Take the code that creates a dictionary from the property value
      returned from 'svn propget' from here...
  dict_from_revlist_prop():
    ...to this new function.

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