Fix duplicate typos in javadocs and exception msg

Author: ParkerM

core/src/main/java/org/springframework/ldap/NamingException.java

@@ -128,7 +128,7 @@ public Name getRemainingName() {
      * associated with this exception, if the root cause was an instance of
      * {@link javax.naming.NamingException}.
      * 
-     * @return a composite name describing the the leading portion of the name
+     * @return a composite name describing the leading portion of the name
      *         that was resolved successfully if the root cause is an instance
      *         of javax.naming.NamingException, or <code>null</code> if the
      *         resolved name field has not been set

core/src/main/java/org/springframework/ldap/core/LdapTemplate.java

@@ -167,7 +167,7 @@ public void setIgnoreNameNotFoundException(boolean ignore) {
 	 * Specify whether <code>PartialResultException</code> should be ignored in
 	 * searches. AD servers typically have a problem with referrals. Normally a
 	 * referral should be followed automatically, but this does not seem to work
-	 * with AD servers. The problem manifests itself with a a
+	 * with AD servers. The problem manifests itself with a
 	 * <code>PartialResultException</code> being thrown when a referral is
 	 * encountered by the server. Setting this property to <code>true</code>
 	 * presents a workaround to this problem by causing

core/src/main/java/org/springframework/ldap/query/LdapQueryBuilder.java

@@ -251,7 +251,7 @@ public String[] attributes() {
     @Override
     public Filter filter() {
         if(rootContainer == null) {
-            throw new IllegalStateException("No filter conditions have been specified specified");
+            throw new IllegalStateException("No filter conditions have been specified");
         }
         return rootContainer.filter();
     }