File barrier-use-system-includes.patch of Package barrier

diff -Naur a/src/test/CMakeLists.txt b/src/test/CMakeLists.txt
--- a/src/test/CMakeLists.txt	2020-07-14 12:37:45.000000000 -0500
+++ b/src/test/CMakeLists.txt	2020-11-13 15:18:03.598163859 -0600
@@ -15,13 +15,11 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 include_directories(
-    ../../ext/gtest
-    ../../ext/gtest/include
-    ../../ext/gmock
-    ../../ext/gmock/include)
+    /usr/include/gtest
+    /usr/include/gmock)
     
-add_library(gtest STATIC ../../ext/gtest/src/gtest-all.cc)
-add_library(gmock STATIC ../../ext/gmock/src/gmock-all.cc)
+add_library(gtest STATIC /usr/include/gtest/src/gtest-all.cc)
+add_library(gmock STATIC /usr/include/gmock/src/gmock-all.cc)
 
 if (UNIX)
     # ignore warnings in gtest and gmock