nsf.c: - invalidate paramter caches of subclasses on NsfParameterInvalidateClassCacheCmd unless during shutdown. Otherwise some classes might not become aware of properties added later to superclasses. - extended regression test
nsf.c: - change name of enumeratorConverterEntry to Nsf_EnumeratorConverterEntry, move it with NSF_ARG_* flags to tcl.h to make it available in derived modules using the converter - Added editor hints for a more uniform appearance