bug#28358 libmysql.dll cannot be dynamically loaded on Windows

libmysql/CMakeLists.txt:
  bug#28358 USE_TLS was not defined during build of libmysql.dll with target other than Debug. Defining it for RelWithDebInfo appears to fix the bug for win32 and win64 cmake builds.

libmysql/CMakeLists.txt

@@ -18,6 +18,10 @@ INCLUDE("${PROJECT_SOURCE_DIR}/win/mysql_manifest.cmake")
 # storage does not work properly in DLLs.
 SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DSAFEMALLOC -DSAFE_MUTEX -DUSE_TLS")
 SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -DSAFEMALLOC -DSAFE_MUTEX -DUSE_TLS")
+SET(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -DSAFEMALLOC -DSAFE_MUTEX -DUSE_TLS")
+SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -DSAFEMALLOC -DSAFE_MUTEX -DUSE_TLS")
+SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -DSAFEMALLOC -DSAFE_MUTEX -DUSE_TLS")
+SET(CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO} -DSAFEMALLOC -DSAFE_MUTEX -DUSE_TLS")
 
 INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/include 
                     ${CMAKE_SOURCE_DIR}/zlib