[PATCH] Add clarification and example to "Indirect Filehandles"section in perlopentut.pod

A recent discussion on Stackoverflow.com indicated to me that there is
some potential for confusion in the "Indirect Filehandles" section in
perlopentut.pod. See comments to
http://stackoverflow.com/questions/3661161/writing-a-macro-in-perl/3661239#3661239

The attached patch is my attempt at clarifying that indirect
filehandles are closed when there are no more references to them
rather than simply when the end of the current lexical scope is
reached. I also added an example of returning such a filehandle from a
subroutine.

I am not sure if this is the best way to word it, so I would
appreciate feedback.

The patch is attached.

-- Sinan
-- 
A. Sinan Unur
http://www.unur.com/sinan/

• [PATCH] Add clarification and example to "Indirect Filehandles"section in perlopentut.pod by A. Sinan Unur
• Re: [PATCH] Add clarification and example to "IndirectFilehandles" section in perlopentut.pod by Jesse Vincent