@Override
		public boolean equals(Object obj) {
			if (!(obj instanceof LanguageTag)) {
				return false;
			}
			LanguageTag other = (LanguageTag) obj;
			return version == other.version && id.equals(other.id);
		}
Validate all old language definitions contained within the old language map.  
This is intended to be used by a unit test.
@return number of validation errors
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/util/OldLanguageFactory.java