maint: Use convention 'void * fcn ()' for functions which return pointers. * make_int.cc, dialog.h, file-editor-interface.h, file-editor-tab.h, file-editor.h, octave-txt-lexer.h, main-window.h, octave-dock-widget.h, parser.h, webinfo.h, resource-manager.h, thread-manager.h, c-file-ptr-stream.h, call-stack.h, comment-list.h, ft-text-renderer.h, gl-render.cc, input.h, mex.cc, mexproto.h, mxarray.in.h, oct-fstrm.h, oct-iostrm.h, oct-procbuf.h, oct-stdstrm.h, oct-stream.cc, oct-stream.h, oct-strstrm.h, octave-link.h, sighandlers.cc, symtab.h, sysdep.h, utils.h, audiodevinfo.cc, ov-base-diag.h, ov-base-int.h, ov-base-scalar.h, ov-base-sparse.h, ov-base.h, ov-bool-mat.h, ov-bool-sparse.h, ov-bool.h, ov-builtin.h, ov-cell.h, ov-ch-mat.h, ov-class.h, ov-classdef.h, ov-colon.h, ov-complex.cc, ov-complex.h, ov-cs-list.h, ov-cx-diag.h, ov-cx-mat.h, ov-cx-sparse.h, ov-fcn-handle.h, ov-fcn-inline.h, ov-fcn.h, ov-float.h, ov-flt-complex.h, ov-flt-cx-diag.h, ov-flt-cx-mat.h, ov-flt-re-diag.h, ov-flt-re-mat.h, ov-intx.h, ov-java.cc, ov-java.h, ov-lazy-idx.h, ov-mex-fcn.h, ov-oncleanup.h, ov-perm.h, ov-range.h, ov-re-diag.h, ov-re-mat.h, ov-re-sparse.h, ov-scalar.h, ov-str-mat.h, ov-struct.h, ov-usr-fcn.h, ov.h, octave.h, bp-table.h, jit-ir.h, jit-typeinfo.h, jit-util.h, lex.h, parse.h, pt-arg-list.h, pt-array-list.h, pt-assign.h, pt-binop.h, pt-cell.h, pt-classdef.h, pt-cmd.h, pt-colon.h, pt-const.h, pt-decl.h, pt-except.h, pt-exp.h, pt-fcn-handle.h, pt-funcall.h, pt-id.h, pt-idx.h, pt-jit.h, pt-jump.h, pt-loop.h, pt-mat.h, pt-misc.h, pt-select.h, pt-stmt.h, pt-unop.h, token.h, Array.cc, Array.h, DiagArray2.h, Sparse.h, dim-vector.h, idx-vector.h, sparse-chol.cc, cmd-edit.cc, cmd-edit.h, lo-array-errwarn.cc, lo-array-errwarn.h, lo-array-gripes.cc, lo-utils.h, oct-inttypes.h, oct-locbuf.h, oct-refcount.h, oct-rl-edit.h, oct-rl-hist.h, oct-shlib.cc, oct-shlib.h, str-vec.h, canonicalize-file-name-wrapper.h, dirent-wrappers.h, getopt-wrapper.h, glob-wrappers.h, localcharset-wrapper.h, set-program-name-wrapper.h, signal-wrappers.h, strdup-wrapper.h, tmpfile-wrapper.h, unistd-wrappers.h, display-available.h: Use convention 'void * fcn ()' for functions which return pointers.

--- a/libinterp/octave-value/ov-struct.h	Thu Apr 27 12:31:17 2017 -0400
+++ b/libinterp/octave-value/ov-struct.h	Thu Apr 27 09:48:57 2017 -0700
@@ -58,10 +58,10 @@
 
   ~octave_struct (void) = default;
 
-  octave_base_value *clone (void) const { return new octave_struct (*this); }
-  octave_base_value *empty_clone (void) const { return new octave_struct (); }
+  octave_base_value * clone (void) const { return new octave_struct (*this); }
+  octave_base_value * empty_clone (void) const { return new octave_struct (); }
 
-  octave_base_value *try_narrowing_conversion (void);
+  octave_base_value * try_narrowing_conversion (void);
 
   Cell dotref (const octave_value_list& idx, bool auto_add = false);
 
@@ -144,7 +144,7 @@
 
   bool load_hdf5 (octave_hdf5_id loc_id, const char *name);
 
-  mxArray *as_mxArray (void) const;
+  mxArray * as_mxArray (void) const;
 
   octave_value
   fast_elem_extract (octave_idx_type n) const;
@@ -178,9 +178,9 @@
 
   ~octave_scalar_struct (void) = default;
 
-  octave_base_value *clone (void) const
+  octave_base_value * clone (void) const
   { return new octave_scalar_struct (*this); }
-  octave_base_value *empty_clone (void) const
+  octave_base_value * empty_clone (void) const
   { return new octave_scalar_struct (); }
 
   octave_value dotref (const octave_value_list& idx, bool auto_add = false);
@@ -262,7 +262,7 @@
 
   bool load_hdf5 (octave_hdf5_id loc_id, const char *name);
 
-  mxArray *as_mxArray (void) const;
+  mxArray * as_mxArray (void) const;
 
   bool fast_elem_insert_self (void *where, builtin_type_t btyp) const;