Adding/Removing keywords ignores LastChangedDate

This fixes #27

Author: markphip

base/src/main/java/org/tigris/subversion/svnclientadapter/AbstractClientAdapter.java

@@ -55,7 +55,7 @@ public SVNKeywords addKeywords(File path, SVNKeywords keywords) throws SVNClient
         if (keywords.isLastChangedBy())
             currentKeywords.setLastChangedBy(true);
         if (keywords.isLastChangedDate())
-            currentKeywords.setLastChangedBy(true);
+            currentKeywords.setLastChangedDate(true);
         if (keywords.isLastChangedRevision())
             currentKeywords.setLastChangedRevision(true);
         setKeywords(path,currentKeywords,false);