octave/liboctave
	* Array.h, Array.cc
	(Array<T>::compute_size): New method. Calculates size of Array in
	bytes occupied and elements in array. Invoked by who/whos.
	
octave/src	
	* symtab.cc
	(symbol_record::make_dimensions_string): New method
	used by print_symbol_info_line and maybe_list for printing
	dimensions of variables.
	(symbol_record::print_symbol_info_line): Changes related to
	built-in variables whos_line_format and whos_print_dims.
	Affects output from who and whos. Dimensions of matrices are
	written in any number of dimensions (controlled by
	whos_print_dims). whos_line_format controls the output format for
	whos (who -long)
	(symbol_record::maybe_list): Headers to whos listing
	updated. A footer is added.
	(symbol_record::print_descriptor): Method printing the header of
	whos listings.
	(whos_line_format, Vwhos_line_format): New built-in variables which
	sets layout from whos listings. It is a format string.
	(whos_print_dims, Vwhos_print_dims): New built-in variable which
	sets layout for dimension string in whos.
	(symbols_of_symtab): Added definition of whos_line_format and 
	whos_print_dims. Also added "@end defvar" in texinfo to symbol
	definition to debug_symtab_lookups.

	* symtab.h
	(is_matrix_type, compute_size): New methods in symbol_record and
	symbol_record::symbol_def
	(whos_line_format, Vwhos_line_format, who_print_dims,
	Vwho_print_dims): See symtab.cc

	* Cell.cc, Cell.h
	(Cell::compute_size): New method. Calculates size of cell in bytes
	and elements.

	* ov-base.h
	(octave_base_value::compute_size): New method. Calculates size of
	variable in bytes and elements.
	
	* ov-base-mat.cc, ov-base-mat.h
	(octave_base_matrix<MT>::compute_size): New method. Calculates
	size of variable in bytes and elements.

	* ov-base-nd-array.h
	(octave_base_nd_array<AT>::compute_size): New method. Calculates
	size of variable in bytes and elements.

	* ov-base-scalar.cc, ov-base_scalar.h
	(octave_base_scalar<ST>::compute_size): New method. Calculates
	size of variable in bytes and elements.

	* ov-cell.cc, ov-cell.h
	(octave_cell::compute_size): New method. Calculates
	size of variable in bytes and elements.

	* ov-colon.h
	(octave_magic_colon::compute_size): New method. Calculates
	size of variable in bytes and elements.

	* ov-cs-list.cc, ov-cs-list.h
	(octave_cs_list::compute_size): New method. Calculates
	size of variable in bytes and elements.

	* ov-fcn.h
	(octave_function::compute_size): New method. Calculates
	size of variable in bytes and elements.

	* ov-file.cc, ov-file.h
	(octave_file::compute_size): New method. Calculates
	size of variable in bytes and elements.

	* ov-range.h
	(octave_range::compute_size): New method. Calculates
	size of variable in bytes and elements.

	* ov-struct.cc, ov-struct.h
	(octave_struct::compute_size): New method. Calculates
	size of variable in bytes and elements.
		
	* ov-va-args.h
	(octave_all_va_args::compute_size): New method. Calculates
	size of variable in bytes and elements.

	* ov.cc, ov.h
	(octave_value::compute_size): New method. Calculates
	size of variable in bytes and elements.