2009-10-11  Andreas J. Guelzow <aguelzow@pyrshep.ca>

	* plugin.xml.in: add randsnorm and randstdist
	* functions.c (help_randtdist): use a more reasonable degrees
	  of freedom
	(help_randsnorm): new
	(gnumeric_randsnorm): new
	(help_randstdist): new
	(gnumeric_randstdist): new
	(random_functions): add randsnorm and randstdist

2009-10-11  Andreas J. Guelzow <aguelzow@pyrshep.ca>

	* src/mathfunc.c (random_skew_normal): new
	(random_skew_tdist): new
	* src/mathfunc.h (random_skew_normal): new
	(random_skew_tdist): new