Reviewed-by: kvn, twisti

Summary: Add serviceability support for uint64_t. Flags of unknown type assert in debug builds and are ignored in product builds.
Reviewed-by: never, xlu, mchung, dcubed

Summary: Apply modification of existing server heap size ergo to all collectors except CMS.
Reviewed-by: jmasa, ysr, xlu

Summary: Update copyright for files that have been modified in 2009, up to 03/09
Reviewed-by: katleman, tbell, ohair

Reviewed-by: ysr, mchung

Summary: experimental() flags will protect features of an experimental nature that are not supported in the regular product build. Made UseG1GC an experimental flag.
Reviewed-by: jmasa, kamg, coleenp