merges the most recent version of hiredis into the older hiredis-win32 port.

most of the differences are in net.c where select must still be used instead of poll (connect error reporting needs to be evaluated further since I dropped some of the preivous code)
Also adds a port of the hiredispp classes.  I've removed the boost dependency to make them lighter weight - by sacrificing a few of the functions.  These haven't been tested yet.
Fixes for hiredispp wrapper and a working example app for hiredispp.

Disabled UNICODE support to avoid the issue with boost dependencies.  For now anything requiring boost is disabled/commented out.  If its needed later, then figure it out then.