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/distributions/unidpdf.m	Mon Feb 23 16:42:25 2015 +0000
+++ b/scripts/statistics/distributions/unidpdf.m	Mon Feb 23 14:54:39 2015 -0800
@@ -72,11 +72,11 @@
 %!assert (unidpdf (x, 10*[0 NaN 1 1 1 1]), [NaN NaN y(3:6)])
 %!assert (unidpdf ([x, NaN], 10), [y, NaN])
 
-%% Test class of input preserved
+## Test class of input preserved
 %!assert (unidpdf (single ([x, NaN]), 10), single ([y, NaN]))
 %!assert (unidpdf ([x, NaN], single (10)), single ([y, NaN]))
 
-%% Test input validation
+## Test input validation
 %!error unidpdf ()
 %!error unidpdf (1)
 %!error unidpdf (1,2,3)