hg: jdk6/jdk6/corba: 7128505: Building on em64t system does not work

[kelly.ohair at oracle.com]

Changeset: 3045f6bd5c00
Author:    ohair
Date:      2012-01-09 19:09 -0800
URL:       http://hg.openjdk.java.net/jdk6/jdk6/corba/rev/3045f6bd5c00

7128505: Building on em64t system does not work
Reviewed-by: darcy

! make/common/shared/Platform.gmk