lalinference: DE proposal now copies currentParams to proposedParams
first
LALInference.c: Change LALInferenceGetVariableDimensionNonFixed() so it uses LALInferenceCheckVariableNonFixed() for consistency
lalinference_mcmc: don't look for inclination at injection sample

This is still wrong, and needs to convert the radiation frame
injection params to the system frame ones.  This just stops
errors for the time being.