infcall, c++: collect more pass-by-reference information

infcall, c++: collect more pass-by-reference information

Walk through a given type to collect information about whether the
type is copy constructible, destructible, trivially copyable,
trivially copy constructible, trivially destructible.  The previous
algorithm returned only a boolean result about whether the type is
trivially copyable.  This patch computes more info.  Additionally, it
utilizes DWARF attributes that were previously not taken into account;
namely, DW_AT_deleted, DW_AT_defaulted, and DW_AT_calling_convention.

gdb/ChangeLog:
2019-12-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* gnu-v3-abi.c (enum definition_style): New enum type.
	(get_def_style): New function.
	(is_user_provided_def): New function.
	(is_implicit_def): New function.
	(is_copy_or_move_constructor_type): New function.
	(is_copy_constructor_type): New function.
	(is_move_constructor_type): New function.
	(gnuv3_pass_by_reference): Collect language_pass_by_ref_info
	for a given type.

Change-Id: Ic05bd98a962d07ec3c1ad041f709687eabda3bb9