Log Message:
kdiff3: update to version 1.8.3

Version 1.8.3 - 2020-06-24
===========================
Bug 423001 fixed reload on Windows.
15f1cc4e - Fixed error handling during directory compare.
065a3997, 2d56cd94, 42b3b5e4 - Only give one error message per directory compare \ 
opperation.
Bug 419722 - Fix crash when clipboard is available. Mainly affects some network \ 
setups.
f2d89bbc - Rework intial window display and full screen toggling.
BUG:421048 - Treat /dev/null as non-existant as git expects.