Merge pull request #1 from opencog/master

Need to pull the gcc-4.8 bug workaround to my branch
Update NMXmlParser.cc

Boost 1.53.0 doesn't support shared_dynamic_cast(deprecated and removed in boost). It has to be replaced by dynamic_pointer_cast.
Merge pull request #210 from 5aurabhpathak/master

Nmxmlparser.cc compile issue fix with boost 1.53