using C++11 extern templates if available


git-svn-id: http://edisassm.googlecode.com/svn/trunk@101 509425a9-2fc7-9915-89e0-1a2600d227d4
minor updates to testing infrastructure


git-svn-id: http://edisassm.googlecode.com/svn/trunk@102 509425a9-2fc7-9915-89e0-1a2600d227d4