Reviewed-by: kvn

Reviewed-by: kvn, twisti

Reviewed-by: pbk, kvn

Summary: 6797305 handles load widening but no shortening which should be covered here.
Reviewed-by: never, kvn

Summary: Add a LoadUB (unsigned byte) and LoadUI (unsigned int) opcode class so we have these load optimizations in the first place and do not need to handle them in the matcher.
Reviewed-by: never, kvn

Summary: Some fixes which are required to build on recent GCCs.
Reviewed-by: never, kvn
Contributed-by: langel@redhat.com

Reviewed-by: kvn, rasbold

Summary: Update copyright year for files that have been modified in 2008
Reviewed-by: ohair, tbell

Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold