[fpc-pascal] reference-counted function results not initialized to nil

[David Emerson]

Philosophical arguments aside, I filed a bug against the documentation, 
since one thing is clear-- that I and others were previously misled into 
believing something that is not true.

http://mantis.freepascal.org/view.php?id=30321

In the report, I included several references where the documentation 
could be improved to make the compiler's behavior more clear. If anyone 
wants to expand on that list, please feel free :)

Also perhaps the wiki could use some work in this regard.

~David.