move xdiv, xnorm, and xpow inside octave namespace * xdiv.h, xdiv.cc (elem_xdiv): Rename from x_el_div. (elem_xdiv, xdiv): Move inside octave namespace. Change all uses. Provide deprecated wrapper functions to preserve old names. * xnorm.h, xnorm.cc (xnorm, xcolnorms, xrownorms, xfrobnorm): Move inside octave namespace. Change all uses. Provide deprecated wrapper functions to preserve old names. * xpow.h, xpow.cc (elem_xpow, xpow): Move inside octave namespace. Change all uses. Provide deprecated wrapper functions to preserve old names. * ov-base.cc (install_base_type_conversions): Move inside octave namespace. * ops.h: Don't declare install_ops function here. * ov-typeinfo.cc: Declare install_ops in source file instead of including ops.h. * mk-ops.sh: Move generated code inside octave namespace. * op-b-b.cc, op-b-bm.cc, op-b-sbm.cc, op-bm-b.cc, op-bm-bm.cc, op-bm-sbm.cc, op-cdm-cdm.cc, op-cell.cc, op-chm.cc, op-class.cc, op-cm-cm.cc, op-cm-cs.cc, op-cm-m.cc, op-cm-s.cc, op-cm-scm.cc, op-cm-sm.cc, op-cs-cm.cc, op-cs-cs.cc, op-cs-m.cc, op-cs-s.cc, op-cs-scm.cc, op-cs-sm.cc, op-dm-dm.cc, op-dm-scm.cc, op-dm-sm.cc, op-dm-template.cc, op-dms-template.cc, op-fcdm-fcdm.cc, op-fcm-fcm.cc, op-fcm-fcs.cc, op-fcm-fm.cc, op-fcm-fs.cc, op-fcn.cc, op-fcs-fcm.cc, op-fcs-fcs.cc, op-fcs-fm.cc, op-fcs-fs.cc, op-fdm-fdm.cc, op-fm-fcm.cc, op-fm-fcs.cc, op-fm-fm.cc, op-fm-fs.cc, op-fs-fcm.cc, op-fs-fcs.cc, op-fs-fm.cc, op-fs-fs.cc, op-i16-i16.cc, op-i32-i32.cc, op-i64-i64.cc, op-i8-i8.cc, op-int-concat.cc, op-m-cm.cc, op-m-cs.cc, op-m-m.cc, op-m-s.cc, op-m-scm.cc, op-m-sm.cc, op-mi.cc, op-pm-pm.cc, op-pm-scm.cc, op-pm-sm.cc, op-pm-template.cc, op-range.cc, op-s-cm.cc, op-s-cs.cc, op-s-m.cc, op-s-s.cc, op-s-scm.cc, op-s-sm.cc, op-sbm-b.cc, op-sbm-bm.cc, op-sbm-sbm.cc, op-scm-cm.cc, op-scm-cs.cc, op-scm-m.cc, op-scm-s.cc, op-scm-scm.cc, op-scm-sm.cc, op-sm-cm.cc, op-sm-cs.cc, op-sm-m.cc, op-sm-s.cc, op-sm-scm.cc, op-sm-sm.cc, op-str-m.cc, op-str-s.cc, op-str-str.cc, op-struct.cc, op-ui16-ui16.cc, op-ui32-ui32.cc, op-ui64-ui64.cc, op-ui8-ui8.cc: Move operator functions inside octave namespace.

--- a/libinterp/octave-value/ov-base.cc	Mon Aug 16 19:46:07 2021 -0400
+++ b/libinterp/octave-value/ov-base.cc	Mon Aug 16 21:38:22 2021 -0400
@@ -1524,6 +1524,8 @@
   return (fcn && fcn->name () == "builtin");
 }
 
+OCTAVE_NAMESPACE_BEGIN
+
 void
 install_base_type_conversions (octave::type_info& ti)
 {
@@ -1545,8 +1547,6 @@
   INSTALL_WIDENOP_TI (ti, octave_base_value, octave_cell, cell_conv);
 }
 
-OCTAVE_NAMESPACE_BEGIN
-
 DEFUN (sparse_auto_mutate, args, nargout,
        doc: /* -*- texinfo -*-
 @deftypefn  {} {@var{val} =} sparse_auto_mutate ()