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. Affects output from who and
	whos. Dimensions of matrices are written in any number of
	dimensions (controlled by whos_line_format). whos_line_format
	controls the output format for whos (who -long) only.
	(symbol_table::maybe_list): Headers to whos listing
	updated. A footer is added.
	(symbol_table::print_descriptor): Method printing the header of
	whos listings.
	(symbol_table::parse_whos_line_format): New method. Parses
	through whos_line_format and makes a list of parameters and their formatting.
	(whos_line_format, Vwhos_line_format): New built-in variables which
	sets layout from whos listings. It is a format string.
	(symbols_of_symtab): Added definition of whos_line_format. Also
	added "@end defvar" in texinfo to symbol
	definition to debug_symtab_lookups.

	* symtab.h
	(nelem, byte_size): New methods in symbol_record and
	symbol_record::symbol_def
	(whos_parameter): New struct. Container for one parameter in
	whos_line_format. Used by symbol_table::parse_whos_line_format,
	symbol_table::print_descriptor,
	symbol_record::print_symbol_info_line.
	(symbol_record::dimensions_string_req_first_space): New
	method. Calculates necessary space for first element in dimensions
	string. Used by parse_whos_line_format and print_symbol_info_line.
	(symbol_record::dimensions_string_req_total_space): New
	method. Calculates necessary space for first element in dimensions
	string. Used by parse_whos_line_format and print_symbol_info_line.