[NaCl SDK] Fix "make debug" and "make run" on Mac.

native_client_sdk/src/tools/run.py

Index: native_client_sdk/src/tools/run.py
diff --git a/native_client_sdk/src/tools/run.py b/native_client_sdk/src/tools/run.py
index e2af3595813fcc9d4967c6f822b1c2c9c7a3eaf7..fb99b6d34a554656033a152b727e5f11c9aa39d0 100755
--- a/native_client_sdk/src/tools/run.py
+++ b/native_client_sdk/src/tools/run.py
@@ -67,11 +67,15 @@ def main(args):
 
   # If any debug args are passed in, assume we want to debug
   if options.debug:
-    if getos.GetPlatform() != 'win':
+    if getos.GetPlatform() == 'linux':
       cmd = ['xterm', '-title', 'NaCl Debugger', '-e']
+      cmd += options.debug
+    elif getos.GetPlatform() == 'mac':
+      cmd = ['osascript', '-e',
+             'tell application "Terminal" to do script "%s"' %
+                 ' '.join(r'\"%s\"' % x for x in options.debug)]
     else:
       cmd = []
-    cmd += options.debug
     print 'Starting debugger: ' + ' '.join(cmd)
     debug_process = subprocess.Popen(cmd, env=env)
   else: