Add function ordqz (patch #9897). * libinterp/corefcn/ordqz.cc: New file. * libinterp/corefcn/module.mk: Add new file to build system. * scripts/help/__unimplemented__.m: Remove file from list. * liboctave/numeric/lo-lapack-proto.h (ztgsen): Add new function prototype. * libinterp/corefcn/ordschur.cc (Fordschur), scripts/linear-algebra/ordeig.m: Add seealso link to new function. * NEWS: Announce new function. * doc/interpreter/linalg.txi: Add docstring to manual. * doc/interpreter/contributors.in: Add new contributor to list.

--- a/libinterp/corefcn/ordschur.cc	Thu Oct 22 18:59:34 2020 +0200
+++ b/libinterp/corefcn/ordschur.cc	Fri Apr 24 12:25:38 2020 +0200
@@ -74,7 +74,7 @@
 [@var{U}, @var{S}] = ordschur (@var{U}, @var{S}, [0,1])
 @end example
 
-@seealso{schur, ordeig}
+@seealso{schur, ordeig, ordqz}
 @end deftypefn */)
 {
   if (args.length () != 3)