mc_updateCov: Updated covariance parameters
In wbonat/mcglm: Multivariate Covariance Generalized Linear Models

This function update a list of covariance parameters. It will be useful only inside the fitting algorithm.

1 2	mc_updateCov(list_initial, covariance, list_power_fixed, information, n_resp)

`list_initial`	A list of initial values.
`covariance`	A vector with actual covariance parameters values.
`list_power_fixed`	A list of logicals indicating if the power parameter should be estimated or not.
`information`	A list with information about the number of parameters in the model. In general the output from mc_getInformation.
`n_resp`	A numeric specyfing the number of response variables.