Summary: Account for serialized null scopes in NMethod
Reviewed-by: aph, never, andrew

8150986: serviceability/sa/jmap-hprof/JMapHProfLargeHeapTest.java failing because expects HPROF JAVA PROFILE 1.0.1 file format
Reviewed-by: dcubed, dsamersoff, andrew

8061785: [TEST_BUG] serviceability/sa/jmap-hashcode/Test8028623.java has utf8 character corrupted by earlier merge
Reviewed-by: sla, dsamersoff

Reviewed-by: dsamersoff, allwin, sla

Reviewed-by: sla, allwin

Reviewed-by: dsamersoff, sla

8028623: SA: hash codes in SymbolTable mismatching java_lang_String::hash_code for extended characters.
Reviewed-by: sla, dsamersoff

Summary: After a method rename in JDK-8014905 the mentioned test did not compile any more. Fix the uses of the affected method.
Reviewed-by: jwilhelm, mgerdin, jmasa

Summary: Fixed a compilation failure due to changed method name
Reviewed-by: sla, jbachorik
Contributed-by: fredrik.arvidsson@oracle.com

Summary: Adds support for large(>4G) heap dumps in hprof format. Adds tests and updates testlibrary.
Reviewed-by: sla, allwin
Contributed-by: fredrik.arvidsson@oracle.com