[PATCH doc/langref.tex] Add pointer typecasting information

[Josh Stone]

On 09/01/2009 10:17 AM, Robb Romans wrote:
> Please review. Thanks.

Hi Robb,

It looks like you mostly just took the text from the stap manpage.  For
the parts that you modified, could you please submit those improvements
as a manpage patch too?

The manpage also talks about searching multiple modules separated by a
colon and using headers in case debuginfo isn't available.  That should
be documented in the language reference as well.

Thanks,

Josh