Fix IntelJITEvents ase well

Author: Zentrik

llvm/lib/ExecutionEngine/IntelJITEvents/CMakeLists.txt

@@ -1,5 +1,8 @@
 include_directories( ${CMAKE_CURRENT_SOURCE_DIR}/.. )
-include_directories( ${PROJECT_BINARY_DIR}/ittapi/include/ )
+if(NOT DEFINED ITTAPI_SOURCE_DIR)
+    set(ITTAPI_SOURCE_DIR ${PROJECT_BINARY_DIR})
+endif()
+include_directories( ${ITTAPI_SOURCE_DIR}/ittapi/include/ )
 add_llvm_component_library(LLVMIntelJITEvents
   IntelJITEventListener.cpp