VS 2010 - Change to V4 framework, add SWIG v2.0 files to fix release build exceptions(temp fix till we upgrade all SWIG files)

Moved spandsp to a more recent version. A huge number of little changes occur here, as recently spandsp
lost all the $Id$ entries the source files had for the dark old days of CVS

This is part of MODSKINNY-8

change channel app_flags to be realm specific and default old version to use __FILE__ as the realm name to avoid cross fire between apps using app flags