[eclipselink-dev] The fix checked into both trunk (2.4) and 2.3.1

[Andrei Ilitchev <andrei.ilitchev@xxxxxxxxxx>]

https://bugs.eclipse.org/bugs/show_bug.cgi?id=348815

The fix checked into both trunk (2.4) and 2.3.1

Very simple patch - following the same pattern as
"javax.persistence.transactionType" and "eclipselink.target-server" 
force member's "eclipselink.validation-only" property to be the same as 
composite's one. The fix is in 
EntityManagerSetupImpl.overrideMemberProperties method.