8001424: G1: Rename certain G1-specific flags

Rename G1DefaultMinNewGenPercent, G1DefaultMaxNewGenPercent, and G1OldCSetRegionLiveThresholdPercent to G1NewSizePercent, G1MaxNewSizePercent, and G1Mixed GCLiveThresholdPercent respectively. The previous names are no longer accepted.

Reviewed-by: brutisso, ysr
4 files changed