updating Boost's fpclassify functions location
all tests pass with this commit
all tests pass on windows with this commit
Merge branch 'refactor_math': refactored math library

Conflicts:
	TO-DO.txt
	src/stan/agrad/matrix.hpp
	src/stan/math.hpp
	src/stan/math/matrix.hpp
	src/stan/model/model_header.hpp
updating include to moved cpp file
Added diagonal and dense samplers, refactored static HMC algorithm into base class
Store ps_point internally in hmc_sampler to allow persistant storage
Fix multi_normal_prec
added stochastic volatility example: source, optimized source, sim, and manual
added random number generators in generated quantities to manual; restrict usage in grammar to generated quantities block
Use ps_point for HMC temporaries.  Introduced NUTS (not sure NUTS algorithm is working yet)
Removed deprecated files
added skew normal distr to doc
fixed typo in normal and student-t distr in doc
added exponential normal dist to doc
added gumbel distribution to doc
Ensure number of steps is greater than 0
Removed a few bugs.  Still not sure if NUTS is working correctly.
more function doc for rng
Merge branch 'master' of https://github.com/stan-dev/stan