8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013
Summary: Copyright year updated for files modified during 2013
Reviewed-by: twisti, iveresov

8024718: Metaspace performance counters and memory pools should report the same data
Reviewed-by: stefank, dholmes, coleenp

8014659: NPG: performance counters for compressed klass space
Reviewed-by: mgerdin, coleenp, hseigel, jmasa, ctornqvi

8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
Reviewed-by: mgerdin, coleenp

8004172: Update jstat counter names to reflect metaspace changes
Reviewed-by: stefank, jmasa

8004982: JDK8 source with GPL header errors
Reviewed-by: ohair

6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>