xotcl.h

- changed interface of ::xotcl::methodproperty to be used as well for introspection
- added ::xotcl::methodproperty ... static
We have now
* call-protection via methodproperty "protected"
* overwrite-protection via methodproperty "static"
Static methods can be deleted, but not overwritten (accidentially)

- added flag "-protected" to "method" for call-protected methods

- added checks for overwrite-protection to tcl implemented methods.
aliases, forwarder, and parametercmds

- removed "classscopedinstproc" (use "method -inner-namespace" instead)

- removed C-implemented unknown handler for ::xotcl::Class
and replaced by a Tcl-implemented one (should move into
compatibility library)

- removed XOTclAddPMethod() (use XOTclAddObjectMethod instead)
- removed XOTclAddIMethod() (use XOTclAddInstanceMethod instead)

- generalized MakeObjectMethod() and MakeClassMethod() into MakeProc()

- removed compile-flag NAMESPACEINSTPROCS and AUTOVARS
- removed defines for isClassString, isDoubleDashString, isAllocString,
isDeallocString, isDestroyString