- serializer: move checking of the requested objects to be exported to the invocation of "Serializer all" - replace "namespace import ::xotcl::*" by "xotcl::use xotcl1"
- added option "objectsystems" to ::xotcl::configure to obtain the currently defined object systems - added option "baseclass" to ::xotcl::is to check, whether a class is a baseclass of an object system (root class or root meta-class of object system) - changed result of "... info methods -methodtype scripted" to return only truely scripted methods (no aliases) - some more cleanup in regression tests - first version of serializer for xotcl1 + xotcl2