Move status file entries from tests/lib to pkg so as not to run known failing tests on the moved li…

pkg/pkg.status

Index: pkg/pkg.status
===================================================================
--- pkg/pkg.status	(revision 10771)
+++ pkg/pkg.status	(working copy)
@@ -2,10 +2,26 @@
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
-fixnum/tests/int_64_vm_test: Skip # Timeout TODO(dgrove):investigate
+# Run this test manually to verify that the fixnum library produces
+# the same results as native ints on a set of directed and random inputs.
+# Skip it when runnimng automated tests because it times out.  This
+# test only makes sense on runtimes that support 64-bit integer
+# arithmetic natively, i.e., the VM.
+fixnum/int_64_vm_test: Skip
 
 [$compiler == dart2dart]
 *: Skip
 
 [ $runtime == opera ]
 *: Skip
+
+[ $compiler == dartc ]
+unittest/test/mock_regexp_negative_test: fail
+unittest/test/mock_stepwise_negative_test: fail
+
+[ $compiler == dart2js || $compiler == dartc ]
+unittest/test/instance_test: Skip
+
+[ $compiler == dart2js && $checked ]
+fixnum/int_32_test: Fail # Issue 3720.
+fixnum/int_64_test: Fail # Issue 3720.