2002-03-10  Andreas J. Guelzow <aguelzow@taliesin.ca>

	* analysis-tools.c (dao_range_name) : new utility
	(dao_command_descriptor) : new utility
	(dao_adjust) : new utility
	(prepare_output) : set all variables to sensible values
	  to avoid unneccessary type checks elsewhere
	(format_output) : utility clearing output range as
	  appropriate.
	(anova_single_factor_tool) : change into an engine
	  callable by cmd_analysis_tool, renamed to
	  analysis_tool_anova_single_engine_run
	(analysis_tool_anova_single_engine_clean) : new
	(analysis_tool_anova_single_engine) : selector function
	* analysis-tools.h : some rearrangments, new
	  analysis_tool_engine_t type, added fields to
	  data_analysis_output_type_t

2002-03-10  Andreas J. Guelzow <aguelzow@taliesin.ca>

	* src/commands.c (command_undo_sheet_delete) new utility function (for
	  CMD_ANALYSIS_TOOL_TYPE and CMD_SHEET_REORGANIZE_TYPE)
	(CMD_ANALYSIS_TOOL) : undo/redo command for data analysis tools.
	* src/commands.h (cmd_analysis_tool) : new

2002-03-10  Andreas J. Guelzow <aguelzow@taliesin.ca>

	* anova-one.glade : add more output options
	* dialog-analysis-tools.c : support new options in one-factor
	  anova and use cmd_analysis_tool
	* tools.h : replace anova_single_factor_tool with
	  analysis_tool_anova_single_engine