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

Change-Id: I1d0dffec74017e46e6bc567252d150854d9aeadb
Task-Url: https://bugs.eclipse.org/bugs/show_bug.cgi?id=423848
Signed-off-by: Sam Davis <sam.davis@tasktop.com>
18 files changed