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fixes in 1.4.0

1) fieldmapping: PntDbClassDescriptor::_getDescribedClassInstanceForData now applies fieldMap to get value of id-column

2) non-object parameters should be passed by value:
- PntDbObject::initFromData now passes params by value
- pnt/generalFunctions array_addAll, array_assocAddAll now passses and assigns $toAdd by value
- PntDao::setQueryToSaveObject_table_fieldMap, ::setQueryToInsertObject_table_fieldMap now passes $fieldMap by value