create required dir
MultivarGaussian now requires row vectors
bugfix for origin functions

from sybil example:

#Login(Owner = x) ~
  if Honest(x) then 1
    else Geometric(0.8);

Before this fix, using x inside the dependency statement caused a
"no reference found" error
succ and iota are now lowercase
fix background-subtraction examples
more fixes to the background-subtraction examples
syntax fixes
change Discrete to take a column vector
change MultivarGaussian to operate on column vectors
change Multinomial to operate on column vectors
change Dirichlet to operate on column vectors
fix examples after making all distributions work with column vectors
more bugfixes to distributions
fix one more example
move and-or to example_wip
fix simple-pcfg.blog

This is an excellent example of where a debugger would be useful.
Unfortunately our debugger does not help in this case, because generating
the world fails, so we never get access to the world to try to evaluate
expressions in it...
generalize applyToTerms and move it from Term to ArgSpec

(This fixes a bug in example/aircraft-wandering.dblog where the old
implementation of applyToTerms failed to cast a TupleSetSpec to a Term.
The model still doesn't run though -- all particles have zero weight.)
Merge pull request #238 from BayesianLogic/fix-examples

fix examples