Reviewed-by: goetz

8087291: InitialBootClassLoaderMetaspaceSize and CompressedClassSpaceSize should be checked consistent from MaxMetaspaceSize
Reviewed-by: dholmes, sspitsyn, poonam

Summary: Don't split if all edges will be moved to new phi
Reviewed-by: kvn

Reviewed-by: mdoerr, simonis
Contributed-by: NMatthew Brandyberry <mbrandy@linux.vnet.ibm.com>

Reviewed-by: jrose, coleenp, ahgross, acorn, vlivanov