Log Message:
Update to 1.7.3:

2013-5-4 meld 1.7.3
====================

  Features:

    * Support launching conflict comparisons from Subversion (Louis des
      Landes)
    * The external text editor setting now supports opening files at a
      particular line number (Konstantin Starojitski)

    * A host of minor improvements to the version control UI, including:
      * Add a new Push action for VC modules, currently supported in Git (Kai
        Willadsen)
      * Show a summary of unpushed commits, currently supported in Git (Kai
        Willadsen)
      * Reworked commit dialog, including more details about files to be
        committed and more useful previous-log selection (Kai Willadsen)
      * Console output for VC comparisons is now formatted to better
        distinguish commands, output and errors (Kai Willadsen)
      * Support better sensitivity handling in VC comparisons, currently
        implemented by Git (Kai Willadsen)

    * Sundry minor UI improvements:
      * Much HIG-ification and better wording for actions, dialogs and
        labels (Kai Willadsen, with diligent bug reporting from Adam Dingle)
      * Make columns user-resizable in version control and folder comparisons
        (Kai Willadsen)
      * There is now a Save All action, to save all modified files in the
        current comparison (Kai Willadsen)
      * Rather than giving up on long inline-highlighting comparisons, Meld
        now prompts to continue the comparison (Kai Willadsen)
      * F5 is now a additional shortcut for Refresh (Kai Willadsen)
      * Reload has been renamed to Revert and its UI has been improved for
        file comparisons (Kai Willadsen)

  Fixes:

    * Version control updates and miscellaneous fixes (Dominique Leuenberger,
      Louis des Landes, Timothy Babych, Kai Willadsen)
    * When guessing file types for syntax highlighting, we now use file
      contents as well as extension (Kai Willadsen)
    * Prev/Next Change navigation now centres changes slightly more
      aggressively (Kai Willadsen)

  Translations:
    * Daniel Mustieles (es)
    * Gabor Kelemen (hu)
    * Inaki Larranaga Murgoitio (eu)
    * Jiro Matsuzawa (ja)
    * Marek Černocký (cs)
    * Martin Srebotnjak (sl)
    * Matej Urbančič (sl)
    * Pere Orga (ca)
    * Piotr Drąg (pl)
    * Rafael Ferreira (pt_BR)
    * Мирослав Николић (sr, sr@latin)