6952853: SIGSEGV with UseAdaptiveGCBoundary on 64b linux running jvm2008
Summary: Shrinking of a generation and the corresponding card table was causing part of the card table to be uncommitted.
Reviewed-by: jcoomes
6946048: G1: improvements to +PrintGCDetails output
Summary: Small improvements to G1's PrintGCDetails output. It also includes minor formatting details.
Reviewed-by: ysr, johnc