Log Message:
Update puf to 1.0.0.  Changeset from Thomas Merkel.

Changes since puf-0.93.2a:

1.0.0 (16 Oct 2005)
    - Fixed command line parsing error that caused -d to be taken as -dc
    - -r[+[+]] doesn't imply -p any more, but it advances -p to -pr[+[+]]
    - The scope of URL-based switches can be limited with brackets now
    - The file supplied to -i is now interpreted as a generic command file
      with one command line switch (incl. argument) or URL per line
    - Dropped SPEC format - use -O and the new -xy/-xyy switches instead
    - $http_proxy is now obeyed if no proxies are specified with -y/-iy
    - Scope of -O switch unified with other URL-based switches
    - Made -O buffer output when dumping multiple sources to one target
    - Added support for "-O -"
    - Added -A, -R, -D, -Dl, -Dr, -xr, -xu, -xs, -xo and -xO switches
    - Removed -xe switch
    - -xE now enumerates per occurrence of -P
    - Vast performance improvements of large downloads
    - Automatically %-escape [invalid] spaces in URLs
    - Various bug fixes
    - Change of versioning scheme to something more reasonable

0.93.3 (20 May 2004)
    - Don't retry after HTTP errors 403 and 404. Added -xT switch to
      enforce the old behaviour (for some really broken servers)
    - Don't spawn a separate process for every DNS lookup, but use a
      pool of DNS helper processes instead
    - Added -xh and -dc switches
    - Fixed file corruption on CygWin