Correct the order of tests of chmod(). (#294)

Per code review by haarg, the order of tests was wrong in the first place.
Hence, correctly re-ordering them is a better repair than changing one test's
description.

For: #294

Author: jkeenan

t/eu_command.t

@@ -151,20 +151,21 @@ BEGIN {
         is( ((stat('testdir'))[2] & 07777) & 0700,
             0100, 'change a dir to execute-only' );
 
-        # change a dir to read-only
-        @ARGV = ( '0400', 'testdir' );
+        # change a dir to write-only
+        @ARGV = ( '0200', 'testdir' );
         ExtUtils::Command::chmod();
 
         is( ((stat('testdir'))[2] & 07777) & 0700,
-            0400, 'change a dir to read-only' );
+            0200, 'change a dir to write-only' );
 
-        # change a dir to write-only
-        @ARGV = ( '0200', 'testdir' );
+        # change a dir to read-only
+        @ARGV = ( '0400', 'testdir' );
         ExtUtils::Command::chmod();
 
         is( ((stat('testdir'))[2] & 07777) & 0700,
-            0200, 'change a dir to write-only' );
+            0400, 'change a dir to read-only' );
 
+        # remove the dir we've been playing with
         @ARGV = ('testdir');
         rm_rf;
         ok( ! -e 'testdir', 'rm_rf can delete a read-only dir' );