Add new ordschur function. * libinterp/corefcn/ordschur.cc: New file. * libinterp/corefcn/module.mk: Include it in the list of source files. * scripts/help/__unimplemented__.m: Remove ordschur from the list of unimplemented functions. * doc/interpreter/linalg.txi: Add it to the interpreter manual. * NEWS: Mention it. * libinterp/corefcn/schur.cc (schur): Reference it from the documentation of the schur function. Thanks to Carnë Draug for improving the original patch, and to Mike Miller for reviewing it and suggesting improvements.

--- a/libinterp/corefcn/module.mk	Wed Feb 18 09:20:59 2015 -0800
+++ b/libinterp/corefcn/module.mk	Sat Feb 07 21:51:20 2015 +0100
@@ -220,6 +220,7 @@
   corefcn/oct-stream.cc \
   corefcn/oct-strstrm.cc \
   corefcn/octave-link.cc \
+  corefcn/ordschur.cc \
   corefcn/pager.cc \
   corefcn/pinv.cc \
   corefcn/pr-output.cc \