eliminate octave:: namespace tags in DEFUN and DEFMETHOD and more Files affected: __betainc__.cc, __contourc__.cc, __eigs__.cc, __expint__.cc, __ftp__.cc, __gammainc__.cc, __ichol__.cc, __ilu__.cc, __magick_read__.cc, __pchip_deriv__.cc, __qp__.cc, amd.cc, balance.cc, besselj.cc, bsxfun.cc, call-stack.cc, ccolamd.cc, cellfun.cc, chol.cc, colamd.cc, colloc.cc, conv2.cc, daspk.cc, dasrt.cc, dassl.cc, data.cc, defaults.cc, dirfns.cc, display.cc, dlmread.cc, dmperm.cc, dot.cc, eig.cc, ellipj.cc, environment.cc, error.cc, event-manager.cc, fft.cc, fft2.cc, fftn.cc, file-io.cc, find.cc, gcd.cc, getgrent.cc, getpwent.cc, getrusage.cc, gsvd.cc, hash.cc, help.cc, hess.cc, hex2num.cc, input.cc, inv.cc, jsondecode.cc, jsonencode.cc, load-path.cc, load-save.cc, lookup.cc, lsode.cc, lu.cc, max.cc, mgorth.cc, oct-hist.cc, ordqz.cc, ordschur.cc, pager.cc, pr-output.cc, psi.cc, qr.cc, quad.cc, quadcc.cc, qz.cc, rand.cc, regexp.cc, schur.cc, settings.cc, sighandlers.cc, sparse.cc, spparms.cc, sqrtm.cc, stream-euler.cc, strfind.cc, strfns.cc, sub2ind.cc, svd.cc, symbfact.cc, symtab.cc, syscalls.cc, sysdep.cc, time.cc, toplev.cc, tril.cc, typecast.cc, urlwrite.cc, utils.cc, variables.cc, __delaunayn__.cc, __fltk_uigetfile__.cc, __glpk__.cc, __init_gnuplot__.cc, __ode15__.cc, __voronoi__.cc, audiodevinfo.cc, audioread.cc, convhulln.cc, fftw.cc, gzip.cc, ov-cell.cc, ov-class.cc, ov-classdef.cc, ov-fcn-handle.cc, ov-struct.cc, ov-typeinfo.cc, ov-usr-fcn.cc, octave.cc, lex.ll, oct-parse.yy, profiler.cc, andpt-eval.cc.

--- a/libinterp/corefcn/pr-output.cc	Sat Aug 14 21:50:26 2021 -0400
+++ b/libinterp/corefcn/pr-output.cc	Sat Aug 14 22:48:52 2021 -0400
@@ -3244,7 +3244,7 @@
       arg = arg.reshape (dv);
     }
 
-  octave::unwind_protect frame;
+  unwind_protect frame;
 
   frame.protect_var (rat_string_len);
 
@@ -3390,11 +3390,11 @@
   if (args.length () != 2)
     print_usage ();
 
-  octave::stream_list& streams = interp.get_stream_list ();
+  stream_list& streams = interp.get_stream_list ();
 
   int fid = streams.get_file_number (args(0));
 
-  octave::stream os = streams.lookup (fid, "fdisp");
+  stream os = streams.lookup (fid, "fdisp");
 
   std::ostream *osp = os.output_stream ();
 
@@ -3516,12 +3516,12 @@
   // disp is done.
 
   bool print_newlines = false;
-  if (octave::valid_identifier (name))
+  if (valid_identifier (name))
     print_newlines = value.print_name_tag (octave_stdout, name);
 
   // Use feval so that dispatch will also work for disp.
 
-  octave::feval ("disp", ovl (value));
+  feval ("disp", ovl (value));
 
   if (print_newlines)
     octave_stdout << std::endl;
@@ -3590,7 +3590,7 @@
   int idx = 1;
   std::string format;
 
-  octave::unwind_protect frame;
+  unwind_protect frame;
 
   frame.protect_var (bank_format);
   frame.protect_var (bit_format);