Port fix for getClient (=> work around axis classloading oddity) to checkConnection
Enhance compatibility with older mantis version - at least some browsing functions work in pre 1.2.12 versions, while a current versions remains advised
Workaround for bug #221002 in netbeans (which is fixed in 7.3)

http://netbeans.org/bugzilla/show_bug.cgi?id=221002
Use implementationversion of bugtracking module that correspondes to the netbeans 7.2 release (=> enable launch from ide after switching from RELEASE721to RELEASE72)