Merge pull request #3828 from martin-frbg/lapack703-3

Define type conversions explicitly (Reference-LAPACK PR703)

lapack-netlib/SRC/cggrqf.f

@@ -275,7 +275,7 @@
 *     RQ factorization of M-by-N matrix A: A = R*Q
 *
       CALL CGERQF( M, N, A, LDA, TAUA, WORK, LWORK, INFO )
-      LOPT = REAL( WORK( 1 ) )
+      LOPT = INT( WORK( 1 ) )
 *
 *     Update B := B*Q**H
 *