perlfaq: added a short table of contents

* before the long list of questions i added a brief list of all
of the perlfaq and their major topics. 

* the day of the week question changed its title for a previous
patch to perlfaq4

* i have added the new <What does "bad interpreter" mean?> question
to perlfaq7 since it did not seem to fit anywhere else.

Index: perlfaq.pod
===================================================================
RCS file: /cvs/public/perlfaq/perlfaq.pod,v
retrieving revision 1.17
diff -r1.17 perlfaq.pod
73c73,89
< =head2 perlfaq: Structural overview of the FAQ.
---
> =over 4
> 
> =item perlfaq  - this document
> 
> =item perlfaq1 - General Questions About Perl
> 
> =item perlfaq2 - Obtaining and Learning about Perl
> 
> =item perlfaq3 - Programming Tools
> 
> =item perlfaq4 - Data Manipulation
> 
> =item perlfaq5 - Files and Formats
> 
> =item perlfaq6 - Regular Expressions
> 
> =item perlfaq7 - General Perl Language Issues
75c91,99
< This document.
---
> =item perlfaq8 - System Interaction
> 
> =item perlfaq9 - Networking
> 
> 
> =back
> 
> 
> =head1 The Questions
415c439
< How do I find the week-of-the-year/day-of-the-year?
---
> How do I find the day or week of the year?
1051a1076,1079
> 
> =item *
> 
> What does "bad interpreter" mean?

-- 
brian d foy, [email protected]