Stop with special treatment of osc cov in FitterBase

[KSkwarczynski]

For example here there is no reasson why Osc wouldn't be just anoht syst vector

MaCh3/mcmc/mcmc.cpp

Lines 170 to 198 in 60dfdff

	// Propose steps for the oscillation handlers
	if (osc) {
	osc->proposeStep();
	// Now get the likelihoods for the oscillation
	osc_llh = osc->GetLikelihood();
	// Add the oscillation likelihoods to the reconfigure likelihoods
	llh += osc_llh;
	#ifdef DEBUG
	if (debug) debugFile << "LLH for oscillation handler: " << llh << std::endl;
	#endif
	}
	// Loop over the systematics and propose the initial step
	for (size_t s = 0; s < systematics.size(); ++s) {
	// Could throw the initial value here to do MCMC stability studies
	// Propose the steps for the systematics
	systematics[s]->proposeStep();
	// Get the likelihood from the systematics
	syst_llh[s] = systematics[s]->GetLikelihood();
	llh += syst_llh[s];
	#ifdef DEBUG
	if (debug) debugFile << "LLH after " << systematics[s]->getName() << " " << llh << std::endl;
	#endif
	}

Currently osc have special function which adds them

MaCh3/mcmc/FitterBase.cpp

Line 314 in 60dfdff

void FitterBase::addOscHandler(covarianceOsc * const oscf) {

The only danger with this change is that it will break expreiment specyfic.

The sooner we change this the better.