Implement --base-iri option in the normalize command.

The `odk:normalize` command declared a `--base-iri` option, but did not
include the logic to actually do anything when that option was used. We
fix that here.

Author: gouttegd

src/main/java/org/incenp/obofoundry/odk/NormalizeCommand.java

@@ -86,6 +86,9 @@ public void performOperation(CommandState state, CommandLine line) throws Except
         boolean doSubsetDecls = CommandLineHelper.getBooleanValue(line, "subset-decls", defValue);
         boolean doSynonymDecls = CommandLineHelper.getBooleanValue(line, "synonym-decls", defValue);
         boolean doInjectSource = CommandLineHelper.getBooleanValue(line, "add-source", false);
+        for ( String prefix : CommandLineHelper.getOptionalValues(line, "base-iri") ) {
+            basePrefixes.add(getIRI(prefix, "base-iri").toString());
+        }
 
         OWLOntology ontology = state.getOntology();