gnucash-on-windows master: Multiple changes pushed

[Geert Janssens]

Updated	 via  https://github.com/Gnucash/gnucash-on-windows/commit/b64957ec (commit)
	 via  https://github.com/Gnucash/gnucash-on-windows/commit/5d225388 (commit)
	from  https://github.com/Gnucash/gnucash-on-windows/commit/da23962d (commit)



commit b64957ec7e249d82b08137dc6fa40594443ab911
Author: Geert Janssens <geert at kobaltwit.be>
Date:   Tue Apr 30 14:22:29 2019 +0200

    Install webkitgtk3 from direct url instead of pacman database
    
    The package was dropped from the pacman database recently but the packages can
    still be downloaded via direct url.

commit 5d2253889e63c5a83d4764a87620e0c6f37e7917
Author: Geert Janssens <geert at kobaltwit.be>
Date:   Tue Apr 30 14:21:17 2019 +0200

    Deduplicate a few variable definitions



Summary of changes:
 setup-mingw64.ps1 | 47 +++++++++++++++++++++++++++++++++++++----------
 1 file changed, 37 insertions(+), 10 deletions(-)