[NaCl SDK] Refactor sdk_update*.

native_client_sdk/src/build_tools/buildbot_common.py

Index: native_client_sdk/src/build_tools/buildbot_common.py
diff --git a/native_client_sdk/src/build_tools/buildbot_common.py b/native_client_sdk/src/build_tools/buildbot_common.py
index cef170fd7e6049a811be28606ac54618a55b765c..7aba24923ad1ea593ae3fa6bf850b2b436fc075e 100644
--- a/native_client_sdk/src/build_tools/buildbot_common.py
+++ b/native_client_sdk/src/build_tools/buildbot_common.py
@@ -49,7 +49,7 @@ def BuildStep(name):
 
 def Run(args, cwd=None, env=None, shell=False):
   """Start a process with the provided arguments.
-  
+
   Starts a process in the provided directory given the provided arguments. If
   shell is not False, the process is launched via the shell to provide shell
   interpretation of the arguments.  Shell behavior can differ between platforms
@@ -74,7 +74,7 @@ def CopyDir(src, dst, excludes=('.svn', '*/.svn')):
 
 
 def CopyFile(src, dst):
-  print 'cp -r %s %s' % (src, dst)
+  print 'cp %s %s' % (src, dst)
   if os.path.abspath(src) == os.path.abspath(dst):
     ErrorExit('ERROR: Copying file onto itself: ' + src)
   args = [src, dst]