!>
!> ALAHD prints header information for the different test paths.
!> 

IOUNIT

!>          IOUNIT is INTEGER
!>          The unit number to which the header information should be
!>          printed.
!> 

PATH

!>          PATH is CHARACTER*3
!>          The name of the path for which the header information is to
!>          be printed.  Current paths are
!>             _GE:  General matrices
!>             _GB:  General band
!>             _GT:  General Tridiagonal
!>             _PO:  Symmetric or Hermitian positive definite
!>             _PS:  Symmetric or Hermitian positive semi-definite
!>             _PP:  Symmetric or Hermitian positive definite packed
!>             _PB:  Symmetric or Hermitian positive definite band
!>             _PT:  Symmetric or Hermitian positive definite tridiagonal
!>             _SY:  Symmetric indefinite,
!>                     with partial (Bunch-Kaufman) pivoting
!>             _SR:  Symmetric indefinite,
!>                     with rook (bounded Bunch-Kaufman) pivoting
!>             _SK:  Symmetric indefinite,
!>                     with rook (bounded Bunch-Kaufman) pivoting
!>                     ( new storage format for factors:
!>                       L and diagonal of D is stored in A,
!>                       subdiagonal of D is stored in E )
!>             _SP:  Symmetric indefinite packed,
!>                     with partial (Bunch-Kaufman) pivoting
!>             _HA:  (complex) Hermitian ,
!>                     with Aasen Algorithm
!>             _HE:  (complex) Hermitian indefinite,
!>                     with partial (Bunch-Kaufman) pivoting
!>             _HR:  (complex) Hermitian indefinite,
!>                     with rook (bounded Bunch-Kaufman) pivoting
!>             _HK:  (complex) Hermitian indefinite,
!>                     with rook (bounded Bunch-Kaufman) pivoting
!>                     ( new storage format for factors:
!>                       L and diagonal of D is stored in A,
!>                       subdiagonal of D is stored in E )
!>             _HP:  (complex) Hermitian indefinite packed,
!>                     with partial (Bunch-Kaufman) pivoting
!>             _TR:  Triangular
!>             _TP:  Triangular packed
!>             _TB:  Triangular band
!>             _QR:  QR (general matrices)
!>             _LQ:  LQ (general matrices)
!>             _QL:  QL (general matrices)
!>             _RQ:  RQ (general matrices)
!>             _QP:  QR with column pivoting
!>             _TZ:  Trapezoidal
!>             _LS:  Least Squares driver routines
!>             _LU:  LU variants
!>             _CH:  Cholesky variants
!>             _QS:  QR variants
!>             _QT:  QRT (general matrices)
!>             _QX:  QRT (triangular-pentagonal matrices)
!>             _TS:  QR routines for tall-skinny and short-wide matrices
!>             _HH:  Householder reconstruction for tall-skinny matrices
!>          The first character must be one of S, D, C, or Z (C or Z only
!>          if complex).
!> 

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