7141244: build-infra merge: Include $(SPEC) in makefiles and make variables overridable
Reviewed-by: dholmes, ohrstrom, ohair, jcoomes
os_family = bsd
arch = x86
arch_model = x86_32
os_arch = bsd_x86
os_arch_model = bsd_x86_32
lib_arch = i386
compiler = gcc
sysdefs = -D_ALLBSD_SOURCE -D_GNU_SOURCE -DIA32