[PATCH pod/perlsyn.pod pod/perltrap.pod] Unseding perlsyn

I've removed some of the references to awk/sed/C in the docs, left others
in that I felt were helpful or didn't cause a digression (ie. a "C-style
for loop").  Useful information moved to perltrap.

Also...
- I've made the =head2 cases consistent (ie. "Simple Statements" rather than
"Simple statements")
- Referenced the relevent perlsyn section in the new perltrap entries.
- Expanded the regex used to parse out line directives into something
  vaguely readable.
- Changed "C Traps" to "C/C++ Traps"


-- 
The desired effect is what you get when you improve your interplanetary 
funksmanship.

• [PATCH pod/perlsyn.pod pod/perltrap.pod] Unseding perlsyn by Michael G Schwern
• Re: [PATCH pod/perlsyn.pod pod/perltrap.pod] Unseding perlsyn by Enache Adrian
• Re: [PATCH pod/perlsyn.pod pod/perltrap.pod] Unseding perlsyn by Michael G Schwern