Don't use echo -n for testing

Darwin doesn't recognize -n as a flag, so t/05-external-command
fails on Darwin.

Author: Chris White

t/05-external-command.t

@@ -27,7 +27,7 @@ my @testcases=(
 	['', '<?! false ?> More stuff', qr{^$} , qr{command 'false' failed: process exited}],
 	['-k', '<?! false ?> More stuff', qr{^ More stuff$} , qr{command 'false' failed: process exited}],
 	# Using capturing for part of the command
-	['', '<?!echo -n "?>Hello!?<?"?>', qr{^Hello!\?$}],
+	['', '<?!echo "?>Hello!?<?"?>', qr{^Hello!\?\n$}],
 
 ); #@testcases
 

t/09-preproc.t

@@ -1,4 +1,3 @@
 #!perl
-
-# TODO test preprocessors
-exit 1;
+use Test::More;
+plan skip_all => 'Not yet implemented';

t/10-postproc.t

@@ -1,4 +1,3 @@
 #!perl
-
-# TODO test postprocessors
-exit 1;
+use Test::More;
+plan skip_all => 'Not yet implemented';