where possible, eliminate octave:: namespace qualifier inside octave namespace Affected files: file-editor-tab.cc, file-editor.cc, main-window.cc, octave-cmd.h, octave-qt-link.cc, settings-dialog.cc, call-stack.cc, environment.cc, ft-text-renderer.cc, gl2ps-print.cc, help.cc, input.cc, interpreter-private.cc, interpreter-private.h, interpreter.cc, load-path.cc, oct-hist.cc, oct-process.cc, oct-stream.cc, pager.cc, syminfo.cc, symtab.h, sysdep.cc, text-renderer.cc, utils.cc, gzip.cc, cdef-manager.cc, ov-fcn-handle.cc, ov-java.cc, jit-typeinfo.cc, oct-parse.yy, pt-eval.cc, pt-tm-const.cc, chol.cc, gsvd.cc, oct-rand.cc, oct-rand.h, randmtzig.cc, randpoisson.cc, file-ops.cc, lo-sysdep.cc, file-info.cc, oct-glob.cc, oct-sparse.cc, and url-transfer.cc.

--- a/libinterp/parse-tree/pt-tm-const.cc	Tue May 21 19:50:59 2019 +0000
+++ b/libinterp/parse-tree/pt-tm-const.cc	Wed May 22 13:57:30 2019 +0000
@@ -463,8 +463,7 @@
     //
     // We might also start with a empty octave_value using
     //
-    //    ctmp = octave::type_info::lookup_type
-    //          (tmp.begin() -> begin() -> type_name());
+    //   ctmp = type_info::lookup_type (tmp.begin() -> begin() -> type_name());
     //
     // and then directly resize.  However, for some types there might be
     // some additional setup needed, and so this should be avoided.