[opwig] Cleanup stuff.
[opwig] Starting support for namespace.
[opwig] Improving MDNamespace class.
[opwig] Aded method MDNamespace::NestedNamespacesNum();
[opwig] Added a test for opwig.
[opwig] Full parser test for empty files =P
[opwig] Detects namespaces nested in global namespace.
[opwig] Optimization: no more copying declarations around.
[opwig] Added MDNamespace::NestedNamespace() getter.
[opwig] More complete tests.
Merge branch 'namespace' into declaration