IBM Java 8 support appears to have issues

[sesuncedu]

Test environment is linux,amd64

With compressed references.

• Empty array reported as using 16 bytes by Agent but 8 bytes by Unsafe.
• new Object[1] is reported as using 16 bytes by Agent and Unsafe.

With compressed references disabled,

• new Object() size is reported as 16 bytes by Agent and 24 bytes by Unsafe

Header sizes in JvmInformation appear to be incorrect

• 16 bytes for 32 bit /compressed refs, 24 bytes for uncompressed refs