Fix up the stuff here for appending values to an APE::Item and round out the API a bit.

Based on Michael's patch...

BUG:120256


git-svn-id: svn://anonsvn.kde.org/home/kde/trunk/kdesupport/taglib@503255 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

ape/apeitem.h

@@ -86,9 +86,47 @@ namespace TagLib {
 
       /*!
        * Returns the binary value.
+       *
+       * \deprecated This will be removed in the next binary incompatible version
+       * as it is not kept in sync with the things that are set using setValue()
+       * and friends.
        */
       ByteVector value() const;
 
+      /*!
+       * Sets the key for the item to \a key.
+       */
+      void setKey(const String &key);
+
+      /*!
+       * Sets the value of the item to \a value and clears any previous contents.
+       *
+       * \see toString()
+       */
+      void setValue(const String &value);
+
+      /*!
+       * Sets the value of the item to the list of values in \a value and clears
+       * any previous contents.
+       *
+       * \see toStringList()
+       */
+      void setValues(const StringList &values);
+
+      /*!
+       * Appends \a value to create (or extend) the current list of values.
+       *
+       * \see toString()
+       */
+      void appendValue(const String &value);
+
+      /*!
+       * Appends \a values to extend the current list of values.
+       *
+       * \see toStringList()
+       */
+      void appendValues(const StringList &values);
+
       /*!
        * Returns the size of the full item.
        */