Hermitian/symmetric positive definite matrix: Cholesky, banded

Modules
	pbsv: Cholesky factor and solve
	pbsvx: Cholesky factor and solve, expert
	--- computational routines ---
	pbcon: Cholesky condition number estimate
	pbtrf: Cholesky triangular factor
	pbtf2: Cholesky triangular factor panel, level 2
	pbtrs: Cholesky triangular solve using factor
	pbrfs: Cholesky iterative refinement
	pbequ: Cholesky equilibration
	laqhb: row/col scale matrix

Detailed Description