2002-02-20  Andreas J. Guelzow <aguelzow@taliesin.ca>

	* fn_stat.c : change all occurrences of extra_stat.df to
	  extra_stat.df_resid

2002-02-20  Andreas J. Guelzow <aguelzow@taliesin.ca>

	* src/analysis-tools.c (regression_tool) : use only values
	  from extra_stat (renamed to regression_stat)
	* src/regression.c (general_linear_regression) : calculate more
	  regression_stat
	(regression_stat_new) : new
	(regression_stat_destroy) : new
	* src/regression.h : add fields to regression_stat_t and add
	  declarations of regression_stat_new and regression_stat_destroy