Split off candidate-5.0.0 branch

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

version.cmake

@@ -2,9 +2,9 @@
 ## Version Information
 ###
 set ( HPCC_PROJECT "community" )
-set ( HPCC_MAJOR 4 )
-set ( HPCC_MINOR 3 )
+set ( HPCC_MAJOR 5 )
+set ( HPCC_MINOR 1 )
 set ( HPCC_POINT 0 )
 set ( HPCC_MATURITY "trunk" )
-set ( HPCC_SEQUENCE 1 )
+set ( HPCC_SEQUENCE 0 )
 ###