Update to 4.07:

4.07 Sun May 31 2009: - Balint Szilakszi <szbalint at cpan.org>

    - Fixed >32bit integer option passing to libcurl on 32bit systems.
      (Thanks to Peter Heuchert for the report and fix suggestion!)
    - The CURL_CONFIG environment variable can now be used to specify
      which curl-config to use (contributed by claes).
    - Fixed segfault when a string option with setopt was set to undef
      (contributed by claes).
    - Fixed incomplete cleanup routine at destruction time
      (contributed by claes).
    - Readded Easy.pm and Share.pm stubs so that they are indexed by
      CPAN, thus avoiding complications with outdated versions appearing.

(wiz)