* cp-demangle.c (d_encoding): When DMGL_PARAMS is not set, strip
	CV-qualifiers from D_COMP_LOCAL_NAME right subtree.
	* cplus-dem.c (demangle_arm_hp_template): Set DMGL_PARAMS when
	demangling template parameters.
	* testsuite/test-demangle.c (fail): New static function.
	(main): Support new options in input file: --no-params,
	--is-v3-ctor, and --is-v3-dtor.
	* testsuite/demangle-expected: Add --no-params to most tests, and
	add the correct result when parameters are not demangled.  Add
	some simple tests for V3 constructor/destructor recognition.

From-SVN: r75336