Fix two bugs in my recent previous commits.
* cvs2svn: Fix typo: 'getopt_getopt' -> 'getopt.getopt'.
Python requires that __future__ imports be before any significant code in
a file, which prevents us from doing version testing and producing a nice
error when run under an old Python version. Fortunately, the only need
for the __future__ import has since been moved out into cvs2svn_lib, so
circumvent the issue by deleting the __future__ import from cvs2svn.
git-svn-id: http://cvs2svn.tigris.org/svn/cvs2svn/trunk@2097 be7e6eca-30d4-0310-a8e5-ac0d63af7087