Fixing buildbot job:

 - explicitly turning OCL off since WinRT does not support it
 - fixing macro definitions in core/ocl.cpp
Signed-off-by: Maxim Kostin <v-maxkos@microsoft.com>

cmake/OpenCVDetectOpenCL.cmake

@@ -10,6 +10,11 @@ else(APPLE)
   set(OPENCL_INCLUDE_DIR "${OpenCV_SOURCE_DIR}/3rdparty/include/opencl/1.2")
 endif(APPLE)
 
+if(WINRT)
+  set(OPENCL_FOUND NO)
+  set(HAVE_OPENCL_STATIC OFF)
+endif(WINRT)
+
 if(OPENCL_FOUND)
   if(NOT HAVE_OPENCL_STATIC)
     try_compile(__VALID_OPENCL
@@ -24,7 +29,9 @@ if(OPENCL_FOUND)
     endif()
   endif()
 
-  set(HAVE_OPENCL 1)
+  if(NOT WINRT)
+    set(HAVE_OPENCL 1)
+  endif()
 
   if(WITH_OPENCL_SVM)
     set(HAVE_OPENCL_SVM 1)

modules/core/src/ocl.cpp

@@ -2198,7 +2198,6 @@ inline cl_int getStringInfo(Functor f, ObjectType obj, cl_uint name, std::string
     return CL_SUCCESS;
 }
 
-#ifdef HAVE_OPENCL
 static void split(const std::string &s, char delim, std::vector<std::string> &elems)
 {
     elems.clear();
@@ -2239,7 +2238,6 @@ static bool parseOpenCLDeviceConfiguration(const std::string& configurationStr,
     }
     return true;
 }
-#endif
 
 #ifdef WINRT
 static cl_device_id selectOpenCLDevice()