Overview of changes in gcalctool 5.29.2

    * Support conversions in display (e.g. "1 AUD in USD" or "6.2 inches in
      meters") (Robert Ancell)

    * Support arbitrary varible names, e.g. set with "name=55" (Robert Ancell)

    * Add a command-line version of gcalctool 'gcalccmd'
      (Rich Burridge, Bug #590767)

    * Updated translations: en@shaw (Thomas Thurman), es (Jorge González),
                            sl (Matej Urbančič), ta (drtvasudevan),
                            zh_CN (Aron Xu)