[eclipse-pmc] Raising minimum EE for org.eclipse.core.runtime to Java 5

[John Arthorne <John_Arthorne@xxxxxxxxxx>]

I am planning to raise the minimum EE for
org.eclipse.core.runtime to Java SE 5. There is a concrete need to use
newer class library API in bug 391047, but the main reasons are:

 - There are no JDK 1.4 or older
VM's available that are not beyond end of service life
 - We have been unable to run or
test Eclipse on JDK 1.4 for at least a couple of years already. We have
no confidence that we can still run reasonable on such VMs.
 - The Equinox framework implementation
has already moved to Java SE 5.
 - org.eclipse.core.runtime is
comprised of a small set of mostly deprecated platform APIs that are not
of interest in embedded scenarios anyway. Any API useful for small footprint
OSGi applications was moved to other bundles such as org.eclipse.equinox.common.

For details see: https://bugs.eclipse.org/bugs/show_bug.cgi?id=391144

John