Possible compatibility problems with earlier versions marked with '*'.
+OPAC support ZOOM. ZOOM_record_get returns OPAC info (as XML) if
+type is "opac".
+
Add three new utility functions for translating OIDs between various
formats -- symbolic name such as "Usmarc", minus-1-terminated int
arrays and dotted strings such as "1.2.840.10003.9.5.1":