changes in dell.com site where warranty info gets fetched from.
The column 'days left' is gone, we need to calculate it ourselves from
the info in column 'end date'. New functions _find_days_left() and
_from_text_to_datetime() achieve this

Renamed @days_left/$days_left to @end_date/$end_date. Search and
replace all over the script. Also changed comparisons, we had numerical
and now we have strings ...

Thanks for the changes, dell.com ...
again numerical vs string comparison changes (dell.com changed site)
Reorganized script
typo
I did not check if warranty period already reached. So when it was
already out of support, I got increasing days of warranty left.

So new function _compare_date_objects solves this. If the support period
has been reached, now we get a warning.
new version 0.4
mediawiki site changed link case from 'Download' to 'download'.

Unfortunately I cannot use the text_regex method with 'i' insensitive
because mediawiki gives me a link to a 'your language' site ...
added version cli option, perltidy
remove all scripts not being nagios plugins
Merge branch 'master' of github.com:/natxo/nagios_plugins