run_dump_test replace PROG with DUMPPROG in gas and ld

run_dump_test replace PROG with DUMPPROG in gas and ld

To be compatible with the binutils version, that uses PROG for the
tool under test and DUMPPROG for the dump tool.

gas/
	* testsuite/gas/mips/aent-2.d,
	* testsuite/gas/mips/aent-mdebug-2.d,
	* testsuite/gas/mips/attr-gnu-4-0.d,
	* testsuite/gas/mips/attr-gnu-4-1.d,
	* testsuite/gas/mips/attr-gnu-4-2.d,
	* testsuite/gas/mips/attr-gnu-4-3.d,
	* testsuite/gas/mips/attr-gnu-4-5.d,
	* testsuite/gas/mips/attr-gnu-4-6.d,
	* testsuite/gas/mips/attr-gnu-4-7.d,
	* testsuite/gas/mips/attr-none-double.d,
	* testsuite/gas/mips/attr-none-o32-fp64-nooddspreg.d,
	* testsuite/gas/mips/attr-none-o32-fp64.d,
	* testsuite/gas/mips/attr-none-o32-fpxx.d,
	* testsuite/gas/mips/attr-none-single-float.d,
	* testsuite/gas/mips/attr-none-soft-float.d,
	* testsuite/gas/mips/elf-rel27.d,
	* testsuite/gas/mips/loc-swap-2.d,
	* testsuite/gas/mips/loc-swap-3.d,
	* testsuite/gas/mips/loc-swap.d,
	* testsuite/gas/mips/micromips@loc-swap-2.d,
	* testsuite/gas/mips/micromips@loc-swap.d,
	* testsuite/gas/mips/micromips@stabs-symbol-type.d,
	* testsuite/gas/mips/mips16-intermix.d,
	* testsuite/gas/mips/mips16@loc-swap-2.d,
	* testsuite/gas/mips/mips16@loc-swap.d,
	* testsuite/gas/mips/mips16@stabs-symbol-type.d,
	* testsuite/gas/mips/mips16e@loc-swap.d,
	* testsuite/gas/mips/no-odd-spreg.d,
	* testsuite/gas/mips/odd-spreg.d,
	* testsuite/gas/mips/r6-attr-none-double.d,
	* testsuite/gas/mips/stabs-symbol-type.d,
	* testsuite/lib/gas-defs.exp (run_dump_test): Replace PROG
	with DUMPPROG.
ld/
	* testsuite/lib/ld-lib.exp (run_dump_test): Replace PROG
	with DUMPPROG.