The top-level build GNUmakefile in build/solaris sets both
the RELEASE and FULL_VERSION variables to the same variable string.

RELEASE should be set to a non-varying (within a release) string
such as "1.1.1". It should be updated when new JDK release occur
(e.g next change is "1.1.2").

FULL_VERSION can continue to be a varying string based on user
and build date.

Presumably similar changes can be made for win32/macos builds
but I havent looked at how things work in those cases.