Split off candidate-5.4.0 branch

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>

version.cmake

@@ -3,8 +3,8 @@
 ###
 set ( HPCC_PROJECT "community" )
 set ( HPCC_MAJOR 5 )
-set ( HPCC_MINOR 2 )
+set ( HPCC_MINOR 3 )
 set ( HPCC_POINT 0 )
-set ( HPCC_MATURITY "rc" )
-set ( HPCC_SEQUENCE 3 )
+set ( HPCC_MATURITY "closedown" )
+set ( HPCC_SEQUENCE 0 )
 ###