Add version to VERSION.cmake filename

The VERSION.cmake file now includes the major and minor versions in the
filename. This will prevent merge conflicts when merging changes upstream.

CMakeLists.txt

@@ -16,7 +16,7 @@ endif()
 
 # Set default values for cache entries and set the MaxScale version
 include(cmake/defaults.cmake)
-include(VERSION.cmake)
+include(VERSION20.cmake)
 
 set(CMAKE_BUILD_TYPE "RelWithDebInfo" CACHE STRING "Choose the type of build, options are: None(CMAKE_CXX_FLAGS or CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel.")
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake")