Downgrade warning when install 5.2.0-1 over 5.2.0-rc5

When install HPCC Gold release over RC build dpkg display downgrade warning message. For example, 5.2.0-1 over 5.2.0-rc5. This can be verified as "dpkg --compare-versions 5.2.0-rc5 lt 5.2.0-1. It return 1 instead expected 0.
A one possible fix: use "~" for no-gold build. For example 5.2.0~rc5.

This probably will apply RPM and others as well.