Merge branch 'Z3' of https://github.com/skysql/MaxScale into Z3
Merge branch 'Z3' of https://github.com/skysql/MaxScale into Z3
Added support for fine-grained query classification which is needed for configurable support for user- and system variable execution. This is partial implementation to task MAX-242. Tests passed with make -C server/modules/routing/readwritesplit/test but this is intermediate commit.