Symmetric/Hermitian positive definite: Cholesky

Topics
	posv: Solves Ax = b using Cholesky factorization (driver)
	potrf: Cholesky factorization
	potrs: Cholesky forward and back solves
	potri: Cholesky inverse
	Auxiliary routines

Detailed Description

Solves \(Ax = b\) using Cholesky factorization for SPD/HPD matrices