[Esa-l]suggestion for making html-trap.procmail easier to read

[Alois Treindl]

The sanitizer filter html-trap.procmail contains several lengthy
perl scripts which are directly imbedded in the filter.
This makes the filter hard to read, and whenever an error occurs
with one of the script, procmail dumps the complete perl script
into procmail.log, which makes very little sense.

It would be better to move each of these perl filters into
a separate file, and call it as a secondary filter.