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

tools/bots/compiler.py

 #!/usr/bin/python
 
 # 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.
 
 """
 Dart2js buildbot steps
 
 Runs tests for the  dart2js compiler.
@@ skipping 121 matching lines @@
     system = dartium_pattern.group(1)
   else :
     return None
 
   # We have both win7 and win8 bots, functionality is the same.
   if system.startswith('win'):
     system = 'windows'
 
   # We have both 10.8 and 10.7 bots, functionality is the same.
   if system == 'mac10.8' or system == 'mac10.7':
+    builder_tag = system.replace('.', '_')
     system = 'mac'
 
   if (system == 'windows' and platform.system() != 'Windows') or (
       system == 'mac' and platform.system() != 'Darwin') or (
       system == 'linux' and platform.system() != 'Linux'):
     print ('Error: You cannot emulate a buildbot with a platform different '
         'from your own.')
     return None
   return bot.BuildInfo(compiler, runtime, mode, system, checked, host_checked,
                        minified, shard_index, total_shards, is_buildbot,
@@ skipping 245 matching lines @@
     if build_info.mode == 'debug':
       target = 'dart2js_bot_debug'
     args = [sys.executable, './tools/build.py', '--mode=' + build_info.mode,
             '--arch=' + build_info.arch, target]
     print 'Build SDK and d8: %s' % (' '.join(args))
     bot.RunProcess(args)
 
 
 if __name__ == '__main__':
   bot.RunBot(GetBuildInfo, RunCompilerTests, build_step=BuildCompiler)