- The C-library function tmpnam() is deprecated since a while. Therefore naviserver has deprecated ns_tmpnam as well. Therefore we introduce a new function "ad_tmpnam" which requires just a minimal change and uses ns_mktemp.
- rename former "extend_slot" to "extend_slot_default" since its functionality is pretty specialized - use new "extend_slot" from xotcl-core to allow update_attribute_from_slot for * title * description * text * publish_date - bump version dependency to xotcl-core - bump version number to 0.150