Update to last perl release of the cacti version

Howard Jones provided modified versions at
http://wotsit.thingy.com/haj/cacti-weathermap.html that add support for
Cacti instead of MRTG. This is the last version in perl, before
the PHP version (http://www.network-weathermap.com/), with the following
changes:

v1.1.1hj3: 22 Jan 2005 (I was bored!)
        Added direct reading of RRDs. Just use the RRD file as the
TARGET
        Added option to allow swapping of in/out (cacti2weathermap.html
gets
                in and out the wrong way round from RRDs!
REVERSEDIRECTION
                allows you to use 'old' configs with the current code
without
                having to re-do them.

v1.1.1hj2: 22 Jan 2005
        Added --image-uri command-line option.
        Added OVERLIBGRAPH and INFOURL for nodes.
        Added WIDTH option for LINKs. Default is 7 as previously.
        Updated --help output
        Fixed up HTML output a bit - no do-nothing imagemap areas
anymore.

v1.1.1hj: 19 Jan 2005
        Initial public release.
        Adds OVERLIBGRAPH and INFOURL config lines for LINKs
        Adds HTML and imagemap generation
        Adds HTMLSTYLE config option
        Adds BWLABELS config option
        Adds map timestamp

v1.1.1: 3 Apr 2004
        p.christias@noc.ntua.gr version that I started with.