gnucash unstable: Don't build borrowed/gwengui-gtk3 if its provided by gwenhywfar.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/6e9025d2 (commit)
	from  https://github.com/Gnucash/gnucash/commit/e0300d3a (commit)



commit 6e9025d2f93c9c1f36c9da84ae083eb339ce26ab
Author: John Ralls <jralls at ceridwen.us>
Date:   Fri Dec 22 10:26:31 2017 -0800

    Don't build borrowed/gwengui-gtk3 if its provided by gwenhywfar.



Summary of changes:
 CMakeLists.txt                           | 4 ++++
 borrowed/CMakeLists.txt                  | 2 +-
 gnucash/import-export/aqb/gnc-gwen-gui.c | 4 ++--
 3 files changed, 7 insertions(+), 3 deletions(-)