stringencoders v3.4.0 release -- critical bug fix

[Nick Galbreath]

Hi all,

I released stringencoders v3.4.0 last week -- http://code.google.com/p/stringencoders/

It contains a _critical_ bug fix for the url decoder, where a core
dump can occur with a bogus url is based in
(specifically if the hex escaped %XY isn't a hex digit, and has the
high bit set). This was fixed and other code was reviewed for the
same problem. Unit tests were added.

Also, more C++ methods were added to prevent un-needed temporary
string objects from being created.

thanks,

--nickg