6717128: Using relative path for ALT_OUTPUTDIR does not work properly
Summary: import the absolute output directory when launching sub make process and avoid including defs.make in rules.make
Reviewed-by: kamg, kvn
os_family = solaris
arch = x86
arch_model = x86_64
os_arch = solaris_x86
os_arch_model = solaris_x86_64
lib_arch = amd64
compiler = gcc
sysdefs = -DSOLARIS -D_GNU_SOURCE -DAMD64