Log Message:
Updated meld to 3.17.3.

2017-08-13 meld 3.17.3
======================

  Fixes:

   * Fix folder compare when using text filters (Alsan Wong)
   * Make activity spinner show when inline comparisons are running (Kai
     Willadsen)
   * Migrate back from threads to multiprocessing for inline diffs; unusual
     CPU contention caused this to harm interactivity (Kai Willadsen)
   * Manually refreshing a file comparison sometimes caused diff navigation
     to break (Kai Willadsen)
   * Folder comparisons that update their state no longer break navigation
     (Kai Willadsen)
   * Version-control comparison on missing files now work again (Kai
     Willadsen)
   * Fix regression in initial focus for folder comparisons (Kai Willadsen)
   * Fix handling for added, partially staged files in git (Kai Willadsen)

   * Bugs fixed: 784436, 785603, 785859, 786043

  Translations:

   * Daniel Mustieles (es)
   * Matej Urbančič (sl)