Added my mailcap config file.

The corresponding mailcap-handler can be found in the bin directory.
Added the original script by George A. Theall.

This copy was downloaded today from http://www.tifaware.com/code/log-guardian/log-guardian .
Customized hard-coded settings to my needs.

This version is less safe than the original.
However it is intended to be used in a restricted environment where the user that modifies the config file can be trusted.

Overview:
* Removed the taint mode restrictions.
* In earlier Opcode versions :default contained :base_io -- I had to add it explicitly.
* Instead of forgetting about files that do not exist on startup I want File::Tail to consider them if they appear later.
log-guardian config file with eye candy.

Besides the definition of log file monitors, this config contains functionality
like colorized labels for each line and summarization of repeated lines.