8032045: Enable compiler and linker safety switches for debug builds
Summary: Enable GCC linker protections, runtime bounds checks and stack protection.
Reviewed-by: dholmes, kvn, coleenp
os_family = bsd
arch = x86
arch_model = x86_64
os_arch = bsd_x86
os_arch_model = bsd_x86_64
lib_arch = amd64
compiler = gcc
sysdefs = -D_ALLBSD_SOURCE -D_GNU_SOURCE -DAMD64