8169177: AArch64: SIGSEGV when "-XX:+ZeroTLAB" is specified along with GC options
Reviewed-by: aph
Contributed-by: kavitha.natarajan@linaro.org

8079792: GC directory structure cleanup
Reviewed-by: brutisso, stefank, david

8074119: [AARCH64] stage repo misses fixes from several Hotspot changes
Summary: add shared code changes from 8059606, 8069230, 8068976, 8068977, 8072911 and 8071805
Reviewed-by: aph, kvn

8068053: AARCH64: C1 and C2 compilers
Summary: add src/cpu/aarch64/vm/* C1 and C2 files
Reviewed-by: kvn, roland