Fix check-missing-semicolon QA target (bug #47277). * scripts/module.mk: Recode check-missing-semicolon target to exclude files with classdef or nested functions. * subsref.m, subsref.m, cplxpair.m, waitbar.m, cubehelix.m, imshow.m, edit.m, unpack.m, annotation.m, axis.m, legend.m, __contour__.m, __ezplot__.m, __plt__.m, __gnuplot_drawnow__.m, copyobj.m, linkprop.m, __add_default_menu__.m, __gnuplot_print__.m, __print_parse_opts__.m, struct2hdl.m, ellipke.m, gallery.m, strjoin.m: Add missing semicolons to statements.

--- a/scripts/audio/@audiorecorder/subsref.m	Tue Mar 01 09:53:59 2016 -0800
+++ b/scripts/audio/@audiorecorder/subsref.m	Thu Feb 25 10:37:59 2016 -0800
@@ -37,7 +37,7 @@
     field = idx.subs;
     value = get (recorder, field);
   else
-    error ("@audiorecorder/subsref: invalid subscript type")
+    error ("@audiorecorder/subsref: invalid subscript type");
   endif
 
 endfunction