Fix linking of tests with debug options

When compiling fairsoft, fairroot and cbmroot with debug options an error occurred when linking the test executables as described in #1794. The fix now calls the CMake fucntion in a proper way without escaping some variables.

Closes #1794 @15m

core/data/test/CMakeLists.txt

@@ -4,7 +4,7 @@ Macro(CreateGTestExeAndAddTest _testname _includeDirs _linkDirs _sources _depend
   Link_Directories(${_linkDirs})
 
   Add_Executable(${_testname} ${_sources})
-  Target_Link_Libraries(${_testname} "${_dependencies}")
+  Target_Link_Libraries(${_testname} ${_dependencies})
   Gen_Exe_Script(${_testname})
   string(REPLACE ${PROJECT_SOURCE_DIR}
          ${PROJECT_BINARY_DIR} new_path ${CMAKE_CURRENT_SOURCE_DIR}