7070061: Adjust Hotspot make/jprt.properties for new JDK8 settings
Summary: Fix so the JPRT can build with -release jdk8 now
Reviewed-by: ohair
os_family = linux
arch = sparc
arch_model = sparc
os_arch = linux_sparc
os_arch_model = linux_sparc
lib_arch = sparc
compiler = gcc
sysdefs = -DLINUX -D_GNU_SOURCE -DSPARC