Summary: modified jtreg tags and package import to work with JDK 8
Reviewed-by: vlivanov, dholmes

Reviewed-by: acorn, ahgross, jwilhelm, rhalade
Contributed-by: harold.seigel@oracle.com

Reviewed-by: kvn, vlivanov, rhalade, ahgross, jwilhelm
Contributed-by: tobias.hartmann@oracle.com

Reviewed-by: goetz

Reviewed-by: acorn, ahgross, rhalade
Contributed-by: harold.seigel@oracle.com

Reviewed-by: chegar, acorn

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

Reviewed-by: ihse

Summary: Ignore error of intialization of C2 only variables
Reviewed-by: sla, dholmes

Reviewed-by: kvn

Summary: Set UseLoopCounter ergonomically if on-stack-replacement is enabled. Print warning.
Reviewed-by: kvn

Summary: CCP computes wrong type for CountedLoop iv Phi
Reviewed-by: kvn