2000-01-27  Jukka-Pekka Iivonen  <iivonen@iki.fi>

	* src/dialog-advanced-filter.c, src/func.h, src/workbook.c:
	Implemented `Advanced Filter'.

	* src/mathfuns.[ch], src/analysis-tools.c, src/dialogs/dialogs.h,
 	src/dialogs/dialog-analysis-tools.c: Added the following
 	distributions for the random number generation tool:
	- poisson
	- binomial
	- negative binomial
	- exponential