Summary: Don't double-free cached class bytes on redefinition loading failure.
Reviewed-by: sspitsyn, jiangli

8156137: SIGSEGV in ReceiverTypeData::clean_weak_klass_links
8057570: RedefineClasses() tests fail assert(((Metadata*)obj)->is_valid()) failed: obj is valid
Reviewed-by: coleenp

8156137: SIGSEGV in ReceiverTypeData::clean_weak_klass_links
8057570: RedefineClasses() tests fail assert(((Metadata*)obj)->is_valid()) failed: obj is valid
Reviewed-by: coleenp

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

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

8131333: [TESTBUG] RedefineRunningMethodsWithResolutionErrors.java Improperly specified VM option 'TraceRedefineClasses=0x600'
Reviewed-by: coleenp, sspitsyn

Reviewed-by: coleenp, sspitsyn, jfranck

Reviewed-by: coleenp, sspitsyn

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

8156137: SIGSEGV in ReceiverTypeData::clean_weak_klass_links
8057570: RedefineClasses() tests fail assert(((Metadata*)obj)->is_valid()) failed: obj is valid
Reviewed-by: coleenp