gnucash master: One more stab at properly discovering gtest/gmock

[Geert Janssens]

Updated	 via  https://github.com/Gnucash/gnucash/commit/2d451801 (commit)
	from  https://github.com/Gnucash/gnucash/commit/1241b717 (commit)



commit 2d451801e9a425e89f05c2dbe61ed927a5a31cbb
Author: Geert Janssens <geert at kobaltwit.be>
Date:   Wed Feb 8 17:10:35 2017 +0100

    One more stab at properly discovering gtest/gmock
    
    My previous attempt made wrong assumptions on the
    way source files got included in the mock tree.



Summary of changes:
 src/cmake_modules/GncAddTest.cmake | 13 +++++++++----
 src/test-core/CMakeLists.txt       |  2 +-
 2 files changed, 10 insertions(+), 5 deletions(-)