423848: change o.e.m.versions minimum required JRE to Java 7 

Change-Id: I70db6f8bdd05af5651a26972190b0d9e64c8e47f
Task-Url: https://bugs.eclipse.org/bugs/show_bug.cgi?id=423848
Signed-off-by: Sam Davis <sam.davis@tasktop.com>
24 files changed