{up,op}gtr: generate Q from hetrd

Functions
subroutine	cupgtr (uplo, n, ap, tau, q, ldq, work, info)
	CUPGTR
subroutine	dopgtr (uplo, n, ap, tau, q, ldq, work, info)
	DOPGTR
subroutine	sopgtr (uplo, n, ap, tau, q, ldq, work, info)
	SOPGTR
subroutine	zupgtr (uplo, n, ap, tau, q, ldq, work, info)
	ZUPGTR

Detailed Description