Add builder tag for Safari 6.2 slave. Update status files for Safari 6.2.

tests/lib/lib.status

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # 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.
 
 [ $unchecked ]
 mirrors/redirecting_factory_different_type_test: SkipByDesign # Tests type checks.
 
 [ $csp ]
 # Deferred loading does not work from an isolate in CSP-mode
 async/deferred/deferred_in_isolate_test: Skip # Issue 16898
@@ skipping 82 matching lines @@
 mirrors/typedef_metadata_test: RuntimeError # Issue 12785
 mirrors/typedef_reflected_type_test/01: RuntimeError # Issue 12607
 mirrors/typevariable_mirror_metadata_test: CompileTimeError # Issue 10905
 mirrors/type_variable_is_static_test: RuntimeError # Issue 6335
 mirrors/type_variable_owner_test/01: RuntimeError # Issue 12785
 mirrors/variable_is_const_test/none: RuntimeError # Issue 14671
 mirrors/raw_type_test/01: RuntimeError # http://dartbug.com/6490
 mirrors/mirrors_reader_test: Slow, RuntimeError # Issue 16589
 
 [ $runtime == safari || $runtime == safarimobilesim ]
-typed_data/setRange_2_test: Fail # Safari doesn't fully implement spec for TypedArray.set
-typed_data/setRange_3_test: Fail # Safari doesn't fully implement spec for TypedArray.set
-typed_data/setRange_4_test: Fail # Safari doesn't fully implement spec for TypedArray.set
 typed_data/int32x4_test: Fail, Pass # Safari has an optimization bug (nightlies are already fine).
 typed_data/float32x4_test: Fail, Pass # Safari has an optimization bug (nightlies are already fine).
 mirrors/null_test: Fail # http://dartbug.com/16831
 convert/json_test: Fail # https://bugs.webkit.org/show_bug.cgi?id=134920
 
+[ ($runtime == safari && $builder_tag == mac10_7)|| $runtime == safarimobilesim ]
+typed_data/setRange_2_test: Fail # Safari doesn't fully implement spec for TypedArray.set
+typed_data/setRange_3_test: Fail # Safari doesn't fully implement spec for TypedArray.set
+typed_data/setRange_4_test: Fail # Safari doesn't fully implement spec for TypedArray.set
+
+
+[ $runtime == safari && $builder_tag == mac10_8 ]
+mirrors/generics_test/none: RuntimeError # Issue 21427
+
 [ $compiler == dart2js && $runtime == chromeOnAndroid ]
 typed_data/setRange_2_test: RuntimeError # TODO(dart2js-team): Please triage this failure.
 typed_data/setRange_3_test: RuntimeError # TODO(dart2js-team): Please triage this failure.
 
 [ $compiler == dart2js && $runtime != jsshell && $runtime != safarimobilesim && $runtime != safari && $runtime != ff &&  $runtime != ie10]
 math/math_test: RuntimeError
 math/math2_test: RuntimeError
 
 [ $compiler == dart2js && ($jscl || $runtime == d8) && $unchecked ]
 mirrors/invocation_fuzz_test: RuntimeError # Issue 15566
@@ skipping 191 matching lines @@
 
 [ $arch == simarm ]
 convert/chunked_conversion_utf88_test: Skip  # Pass, Slow Issue 12644.
 convert/utf85_test: Skip  # Pass, Slow Issue 12644.
 
 [ $compiler == dart2js ]
 profiler/metrics_num_test: Skip # Because of a int / double type test.
 
 [ $arch == simarm64 ]
 convert/utf85_test: Skip # Pass, Slow Issue 20111.