testing: fix execution of test tdeabc/vcardparser/testread2 with CMake older than 2.8.4

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit d8d8c5e060)

kabc/vcardparser/CMakeLists.txt

@@ -73,6 +73,12 @@ tde_add_check_executable( testread2
   LINK ${TDEABC_TESTS_LINK}
 )
 
+if( CMAKE_VERSION VERSION_LESS "2.8.4" )
+  if( NOT EXISTS "${CMAKE_CURRENT_BINARY_DIR}/tests" )
+    execute_process( COMMAND ln -s "${CMAKE_CURRENT_SOURCE_DIR}/tests" "${CMAKE_CURRENT_BINARY_DIR}/tests" )
+  endif( )
+endif()
+
 add_test( NAME kabc/vcardparser/testread2 COMMAND testread2 WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}" )
 
 # testread tests