[perl #101976] [PATCH] Remove cruft from the module example

# New Ticket Created by  Michael G Schwern 
# Please include the string:  [perl #101976]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org:443/rt3/Ticket/Display.html?id=101976 >


I noticed that the module example in perlmod is a bit long, crufty and out of
date.  I wouldn't teach someone to write a module like that.  It hasn't been
seriously touched in about 10 years.  This patch fixes up the most glaring
problems while retaining its utility as a teaching boilerplate.

* require Exporter instead of use with no import
* Declare and initialize variables together.
* Eliminate archaic RCS/CVS versioning clutter.
* Explain what @ISA does.
* Remove archaic (and slower) &func syntax from exporting
* Remove %EXPORT_TAGS.  It's not explained and rarely used.
* Remove redundant @EXPORT_OK
* Use cleaner $priv_func->() syntax rather than &$priv_func.
* Eliminate prototypes, they're clutter, rarely used and dangerous.


-- 
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• [perl #101976] [PATCH] Remove cruft from the module example by Father Chrysostomos via RT
• [perl #101976] [PATCH] Remove cruft from the module example by Michael G Schwern
• Re: [perl #101976] [PATCH] Remove cruft from the module example by Tony Cook
• Re: [perl #101976] [PATCH] Remove cruft from the module example by H.Merijn Brand
• Re: [perl #101976] [PATCH] Remove cruft from the module example by Michael G Schwern
• Re: [perl #101976] [PATCH] Remove cruft from the module example by Nicholas Clark
• Re: [perl #101976] [PATCH] Remove cruft from the module example by Eric Brine
• Re: [perl #101976] [PATCH] Remove cruft from the module example by Leon Timmermans
• Re: [perl #101976] [PATCH] Remove cruft from the module example by Michael G Schwern
• [perl #101976] [PATCH] Remove cruft from the module example by Father Chrysostomos via RT
• Re: [perl #101976] [PATCH] Remove cruft from the module example by Leon Timmermans
• [perl #101976] [PATCH] Remove cruft from the module example by Father Chrysostomos via RT