moved minus signs in multiply_divide for 3-4x speed improvement
Merge branch 'refactor' of github.com:cvxgrp/CVX.jl into dev
Merge branch 'dev' of https://github.com/cvxgrp/CVX.jl into refactor

Conflicts:
	src/atoms/affine/multiply_divide.jl
Added problems and code to transform problem to dual_conic_form