rKent: Simulate from the Kent distribution
In adchSTATS/spatstatsphadd: Additions to spatstat

Function for simulating point from a Kent distribution.

1	rKent(n, cons, oval, mean, minor, major)

`n`	Positive integer. Number of points to be simulated.
`cons`	Positive real number. The consentration parameter. For large values the distribution will be very concentrated.
`oval`	Positive real number. Unimodal if `2*oval <= cons` , bimodal otherwise.
`mean`	Three dimensional vector. Must be orthogonal to the minor and major vectors. Will be stadardized.
`minor`	Three dimensional vector. Must be orthogonal to the mean and major vectors. Will be stadardized.
`major`	Three dimensional vector. Must be orthogonal to the mean and minor vectors. Will be stadardized.