[binutils-gdb] Port c++/78252 from GCC

[sergiodj+buildbot at sergiodj dot net]

*** TEST RESULTS FOR COMMIT 88acc2e16743fc1e6384758c9a68cd6d2a8bbd46 ***

Author: Nathan Sidwell <nathan@acm.org>
Branch: master
Commit: 88acc2e16743fc1e6384758c9a68cd6d2a8bbd46

Port c++/78252 from GCC

	PR c++/78252
	* cp-demangle.c (struct d_print_info): Add is_lambda_arg field.
	(d_print_init): Initialize it.
	(d_print_comp_inner) <DEMANGLE_COMPONENT_TEMPLATE_PARAM>: Check
	is_lambda_arg for auto.
	<DEMANGLE_COMPONENT_REFERENCE,
	DEMANGLE_COMPONENT_RVALUE_REFERENCE>: Skip smashing check when
	is_lambda_arg.
	<DEMANGLE_COMPONENT_LAMBDA>: Increment is_lambda_arg around arg
	printing.
	* testsuite/demangle-expected: Add lambda auto mangling cases.