Merge branch 'devel' into CliffsBranch
Problem with mvnorm conjugacy
mvnorm end sampler works. Conjugacy should work after chol( ) issue resolved

We have the problem that chol(A + B) gets turned into chol(A) + B. Can
sidestep the issue by using chol( (A+B) ), but better to fix the issue
than use a workaround and forget...

Also end samplers work for mvnorm.
Merge branch 'CliffsBranch' into devel