Add symbolic VERSION file

The VERSION.cmake file defines which VERSION.cmake file is included. By
changing the file that it points to, the version can be changed without it
affecting other parts of the code that use it.

CMakeLists.txt

@@ -16,7 +16,7 @@ endif()
 
 # Set default values for cache entries and set the MaxScale version
 include(cmake/defaults.cmake)
-include(VERSION22.cmake)
+include(VERSION.cmake)
 include(ExternalProject)
 
 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.")

Documentation/Release-Notes/generate_release_notes.sh

@@ -1,9 +1,9 @@
 #!/bin/bash
 
-major=`cmake -P ../../VERSION22.cmake -L|grep 'MAXSCALE_VERSION_MAJOR'|sed 's/.*=//'`
-minor=`cmake -P ../../VERSION22.cmake -L|grep 'MAXSCALE_VERSION_MINOR'|sed 's/.*=//'`
-patch=`cmake -P ../../VERSION22.cmake -L|grep 'MAXSCALE_VERSION_PATCH'|sed 's/.*=//'`
-maturity=`cmake -P ../../VERSION22.cmake -L|grep 'MAXSCALE_MATURITY'|sed 's/.*=//'`
+major=`cmake -P ../../VERSION.cmake -L|grep 'MAXSCALE_VERSION_MAJOR'|sed 's/.*=//'`
+minor=`cmake -P ../../VERSION.cmake -L|grep 'MAXSCALE_VERSION_MINOR'|sed 's/.*=//'`
+patch=`cmake -P ../../VERSION.cmake -L|grep 'MAXSCALE_VERSION_PATCH'|sed 's/.*=//'`
+maturity=`cmake -P ../../VERSION.cmake -L|grep 'MAXSCALE_MATURITY'|sed 's/.*=//'`
 
 VERSION=${major}.${minor}.${patch}
 

VERSION.cmake

@@ -0,0 +1 @@
+include(VERSION22.cmake)

maxctrl/configure_version.cmake

@@ -1,2 +1,2 @@
-include(../VERSION22.cmake)
+include(../VERSION.cmake)
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/lib/version.js.in ${CMAKE_CURRENT_BINARY_DIR}/lib/version.js @ONLY)