Begining support for paste_from_cut.

2000-01-06  Jody Goldberg <jgoldberg@home.com>

	* *.[ch] : rename struct expr_relocate_info -> ExprRelocateInfo.

	* src/sheet.c (sheet_save_row_col_sizes) : New routine to support undo.
	(sheet_save_row_col_sizes) : Ditto.
	(col_row_info_init) : Init hard_size.

	* src/commands.c (cmd_ins_del_row_col_undo) : Restore the row/col size
	  info.
	(cmd_ins_del_row_col_redo) : Save the info.