Makefile.in: Import target_cpu, target_vendor, target_os and their host_ counterparts.

2013-10-11  Thomas Schwinge  <thomas@codesourcery.com>
            Olivier Hainque  <hainque@adacore.com>

	* gcc-interface/Makefile.in: Import target_cpu, target_vendor,
	target_os and their host_ counterparts. Remove host_canonical and
	target_cpu_default, unused. Remove local ad-hoc computations of
	"host", "targ", "arch", "osys" and "manu". Replace uses of these by
	uses of the now imported family, hence back to filters against
	canonical values. Remove filters on e500 for target_cpu, expected to
	be canonicalized into powerpc. Invert the logic filtering on 64bit
	sparc for VxWorks. Simplify the filtering logic for bareboard tools
	target pairs, now using straight elf/eabi filters on the target_os
	part only.

From-SVN: r202518