Making Programs Faster

`parse_text`

My first cut at a special case for C<simple> was:

     ## Look for an entire simple sequence 20030420 mjd@plover.com
     if ( /^([A-Z])<([^<>]*)>$/ ) {
         $seq = Pod::InteriorSequence->new(
                    -name   => $1,
                    -ldelim => "<",  -rdelim => ">",
                    -file   => $file,    -line   => $line
                );
         $seq->append($2);
         $seq_stack[-1]->append($expand_seq 
                                ? &$xseq_sub($self, $seq) 
                                : $seq);
     }
     ... the rest as before ...

I just cribbed most of this from further down
I chopped out the parts that seemed unnecessary
Filled in -rdelim since it was known immediately
The ->append($2) code is simple because I know that $2 is a plain string
- (The original version was more like the second append call)
I don't have to put C<... on the stack while I go looking for ...>.