[roottest] Only check standard output in some MakeProject tests

The standard error output might contain some printouts of paths.

Author: guitargeek

roottest/root/meta/MakeProject/CMakeLists.txt

@@ -103,17 +103,20 @@ else()
     ROOTTEST_ADD_TEST(stltest
                   MACRO runstltest.C
                   OUTREF teststlCTEST${ref_suffix}
+                  CHECKOUT
                   FIXTURES_REQUIRED root-meta-MakeProject-examples-fixture
                   FIXTURES_SETUP root-meta-MakeProject-stltest-fixture)
 
     ROOTTEST_ADD_TEST(stltest2
                   MACRO runstltest2.C
                   OUTREF stltest2.ref
+                  CHECKOUT
                   FIXTURES_REQUIRED root-meta-MakeProject-stltest-fixture)
 
     ROOTTEST_ADD_TEST(foreign
                       COPY_TO_BUILDDIR foreign.root
                       MACRO runforeign.C
+                      CHECKOUT
                       OUTREF foreign${ref_suffix})
 endif()