[roottest[ configure fixtures for cling/const test

To ensure that execution of runConst.C and runConst.C+ do not
affect each other, first delete compiled code, than run interpreted
macro and at the end in compiled mode

Author: linev

roottest/cling/const/CMakeLists.txt

@@ -1,12 +1,19 @@
+ROOTTEST_ADD_TEST(delmacro
+                  COMMAND ${CMAKE_COMMAND} -E remove -f "runConst_C.*"
+                  FIXTURES_SETUP cling-const-delmacro-fixture)
+
 ROOTTEST_ADD_TEST(run1
                   MACRO runConst.C
                   OUTREF good1.output
-                  LABELS roottest regression cling)
+                  LABELS roottest regression cling
+                  FIXTURES_REQUIRED cling-const-delmacro-fixture
+                  FIXTURES_SETUP cling-const-run1-fixture)
 
 ROOTTEST_ADD_TEST(run2
                   MACRO runConst.C+
                   OUTREF good2.output
-                  LABELS roottest regression cling)
+                  LABELS roottest regression cling
+                  FIXTURES_REQUIRED cling-const-run1-fixture)
 
 ROOTTEST_ADD_TEST(constCharTest
                   MACRO constissue.C