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/statistics/base/iqr.m	Mon Feb 23 16:42:25 2015 +0000
+++ b/scripts/statistics/base/iqr.m	Mon Feb 23 14:54:39 2015 -0800
@@ -85,10 +85,11 @@
 %!assert (iqr (1:101), 50)
 %!assert (iqr (single (1:101)), single (50))
 
-%%!test
-%%! x = [1:100];
-%%! n = iqr (x, 0:10);
-%%! assert (n, [repmat(100, 1, 10), 1]);
+## FIXME: iqr throws horrible error when running across a dimension that is 1.
+%!test
+%! x = [1:100]';
+%! assert (iqr (x, 1), 50);
+%! assert (iqr (x', 2), 50);
 
 %!error iqr ()
 %!error iqr (1, 2, 3)