maint: Cleanup C++ code to follow Octave coding conventions. Try to wrap long lines to < 80 characters. Use GNU style and don't indent first brace of function definition. "case" statement is aligned flush left with brace of switch stmt. Remove trailing '\' line continuation from the end of #define macros. Use 2 spaces for indent. * files-dock-widget.cc, history-dock-widget.cc, main-window.cc, octave-cmd.cc, octave-dock-widget.cc, octave-gui.cc, resource-manager.cc, settings-dialog.cc, shortcut-manager.cc, welcome-wizard.cc, workspace-view.cc, cellfun.cc, data.cc, debug.cc, debug.h, dirfns.cc, error.h, file-io.cc, gl-render.cc, gl-render.h, gl2ps-renderer.h, graphics.cc, graphics.in.h, help.cc, input.cc, load-path.cc, load-path.h, lookup.cc, lu.cc, oct-stream.cc, octave-default-image.h, ordschur.cc, pr-output.cc, qz.cc, strfns.cc, symtab.cc, symtab.h, sysdep.cc, variables.cc, zfstream.h, __fltk_uigetfile__.cc, __init_fltk__.cc, __magick_read__.cc, __osmesa_print__.cc, audiodevinfo.cc, ov-classdef.cc, ov-classdef.h, ov-fcn.h, ov-float.cc, ov-flt-complex.cc, ov-java.cc, ov-range.cc, ov-re-mat.cc, ov-usr-fcn.h, ov.cc, op-int.h, options-usage.h, pt-eval.cc, Array-C.cc, Array-fC.cc, Array.cc, Array.h, PermMatrix.cc, Sparse.cc, chMatrix.h, dSparse.cc, dim-vector.h, bsxfun-decl.h, bsxfun-defs.cc, oct-norm.cc, Sparse-op-defs.h, oct-inttypes.cc, oct-inttypes.h, main.in.cc, mkoctfile.in.cc: Cleanup C++ code to follow Octave coding conventions.

--- a/liboctave/array/Array.h	Wed Feb 25 16:23:45 2015 +0100
+++ b/liboctave/array/Array.h	Wed Feb 25 11:55:49 2015 -0800
@@ -497,7 +497,7 @@
   //@{
   //! Indexing with possible resizing and fill
 
-  // FIXME -- this is really a corner case, that should better be
+  // FIXME: this is really a corner case, that should better be
   // handled directly in liboctinterp.
 
 
@@ -613,7 +613,8 @@
 
   //! Find indices of (at most n) nonzero elements. If n is specified,
   //! backward specifies search from backward.
-  Array<octave_idx_type> find (octave_idx_type n = -1, bool backward = false) const;
+  Array<octave_idx_type> find (octave_idx_type n = -1,
+                               bool backward = false) const;
 
   //! Returns the n-th element in increasing order, using the same
   //! ordering as used for sort. n can either be a scalar index or a