Dirichlet random number generator

[Brian Gough]

Gavin Crooks writes:
 > Dirichlet random number generator.
 > 
 > I have attached my Dirichlet distribution random number generator
 > (Now with new and improved spelling!), plus a patch against the
 > current CVS tree for appropriate changes to doc/randist.texi, 
 > randist/Makefile.am, randist/test.c, and randist/gsl_randist.h.
 > 

Thanks, it seems to work ok. I will add it.

Brian