Search lib instead of blib.

So it just works whether in a distribution or not.

t/all_pod_files.t

@@ -11,7 +11,7 @@ BEGIN {
 my @expected;
 if ( $^O eq "VMS" ) {
     @expected = (
-        File::Spec->catfile( 'blib', 'lib', 'Test', 'Pod.pm' ),
+        File::Spec->catfile( 'lib', 'Test', 'Pod.pm' ),
         File::Spec->catfile( 't', 'pod', 'good-pod-script.' ),
         File::Spec->catfile( 't', 'pod', 'good-pod-script.bat' ),
         File::Spec->catfile( 't', 'pod', 'good.pod' ),
@@ -22,14 +22,14 @@ else {
     # The expected files have slashes, not File::Spec separators, because
     # that's how File::Find does it.
     @expected = qw(
-        blib/lib/Test/Pod.pm
+        lib/Test/Pod.pm
         t/pod/good-pod-script
         t/pod/good-pod-script.bat
         t/pod/good.pod
         t/pod/no_pod.pod
     );
 }
-my @files = sort map { lc } all_pod_files( "blib", "t/pod" );
+my @files = sort map { lc } all_pod_files( "lib", "t/pod" );
 @expected = sort map { lc } @expected;
 s{\\}{/}g for @files, @expected;
 is_deeply( \@files, \@expected, "Got all the distro files" );