cpputest: add possibility to build extensions

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
(cherry picked from commit 8c0402f7c4)
Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>

meta-oe/recipes-test/cpputest/cpputest_4.0.bb

@@ -15,7 +15,9 @@ inherit cmake
 EXTRA_OECMAKE = "-DLONGLONG=ON \
                  -DC++11=ON \
                  -DTESTS=OFF \
-                 -DEXTENSIONS=OFF \
                  "
 
 FILES:${PN}-dev += "${libdir}/CppUTest/cmake/*"
+
+PACKAGECONFIG ??= ""
+PACKAGECONFIG[extensions] = "-DEXTENSIONS=ON,-DEXTENSIONS=OFF"