gibbs_update_one_indiv_in_place: does a gibbs update of the full sibling group of individual...
In eriqande/fullsniplings: Full sibling reconstruction from SNP data

does a gibbs update of the full sibling group of individual Ind

1 2	gibbs_update_one_indiv_in_place(FSL, IFS, LMMI, LMMFS, PMMFS, KidProngs, Pile, MatPile, AFSL, Gfreqs, UPG, TP, IndLiks, Ind)

`FSL`	list of integer vectors. Each component is a list of two componontes: `LMMI_Idx` = the index of the sibgroup in LMMI (see below). It also is the column that Ind's current full sib group occuppies in LMMFS
`IFS`	individual full siblings group vector. A vector such that element i contains the base-0 index of the sibship to which the individual with index i belongs. and PMMFS, and KidProngs `Indivs` = the the base-0 indices of individuals in the full sibship.
`LMMI`	Likelihood matrix of marriages given individuals.
`LMMFS`	Likelihood matrix of marriages given full sibships.
`PMMFS`	Posterior matrix of marriages given full sibships.
`KidProngs`	Posterior predictives for the next individuals to be sampled from a full sibship.
`Pile`	An integer vector that we will use as a stack to hold the indices of empty FSL list elements that we can put newly formed sibships into
`MatPile`	An integer vector that is parallel to Pile that holds the corresponding column of LMMFS that go along with the elements of Pile. can be renewed.
`AFSL`	The acceptable full siblings list. Component i is a vector of the base-0 indices of the individuals that indiv i has high full-sibling LOD with.
`Gfreqs`	The genotype frequencies.
`UPG`	Unrelated Pair Genotype Frequencies.
`TP`	Transmission probabilities
`IndLiks`	Individual likelihoods
`Ind`	the index of the individual to be updated.