[CODEC-174] Revert change of set to list in PhonemeBuilder.apply.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/codec/trunk@1544659 13f79535-47bb-0310-9956-ffa450edef68

Author: netomi

src/main/java/org/apache/commons/codec/language/bm/PhoneticEngine.java

@@ -104,7 +104,7 @@ public void append(final CharSequence str) {
          * @param maxPhonemes   the maximum number of phonemes to build up
          */
         public void apply(final Rule.PhonemeExpr phonemeExpr, final int maxPhonemes) {
-            final List<Rule.Phoneme> newPhonemes = new ArrayList<Rule.Phoneme>(maxPhonemes);
+            final Set<Rule.Phoneme> newPhonemes = new LinkedHashSet<Rule.Phoneme>(maxPhonemes);
 
             EXPR: for (final Rule.Phoneme left : this.phonemes) {
                 for (final Rule.Phoneme right : phonemeExpr.getPhonemes()) {