maint: Clean up m-files to follow Octave coding conventions. Try to trim long lines to < 80 chars. Use '##' for single line comments. Use '(...)' around tests for if/elseif/switch/while. Abut cell indexing operator '{' next to variable. Abut array indexing operator '(' next to variable. Use space between negation operator '!' and following expression. Use two newlines between endfunction and start of %!test or %!demo code. Remove unnecessary parens grouping between short-circuit operators. Remove stray extra spaces (typos) between variables and assignment operators. Remove stray extra spaces from ends of lines.

--- a/scripts/general/common_size.m	Mon Feb 23 16:42:25 2015 +0000
+++ b/scripts/general/common_size.m	Mon Feb 23 14:54:39 2015 -0800
@@ -67,7 +67,7 @@
     else
       errorcode = 0;
       if (nargout > 1)
-        scal = !nscal;
+        scal = ! nscal;
         varargout = varargin;
         if (any (nscal))
           dims = size (varargin{find (nscal, 1)});