Community Edition 6.4.0-rc6 Release Candidate 6

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

version.cmake

@@ -7,5 +7,5 @@ set ( HPCC_MAJOR 6 )
 set ( HPCC_MINOR 4 )
 set ( HPCC_POINT 0 )
 set ( HPCC_MATURITY "rc" )
-set ( HPCC_SEQUENCE 5 )
+set ( HPCC_SEQUENCE 6 )
 ###