Use local cpplint.py if it exists

Use local cpplint.py if it exists.

If there is a local cpplint.py in the tools directory use this instead of any cpplint in the path. This makes it possible to run presubmit checks on Windows by downloading cpplint.py from http://code.google.com/p/google-styleguide/.

Committed: http://code.google.com/p/v8/source/detail?r=2874

[Christian Plesner Hansen, 2009-09-08 07:48:58]

Lgtm

http://codereview.chromium.org/194039/diff/1/2
File tools/presubmit.py (right):

http://codereview.chromium.org/194039/diff/1/2#newcode153
Line 153: command = ['python', local_cpplint, '--filter', filt] + join(files)
Above we call cpplint.py as the executable, here we call python explicitly.  Any
reason for not letting the script itself decide how to invoke python?

[Søren Thygesen Gjesse, 2009-09-11 12:30:53]

http://codereview.chromium.org/194039/diff/1/2
File tools/presubmit.py (right):

http://codereview.chromium.org/194039/diff/1/2#newcode153
Line 153: command = ['python', local_cpplint, '--filter', filt] + join(files)
On 2009/09/08 07:48:58, Christian Plesner Hansen wrote:
> Above we call cpplint.py as the executable, here we call python explicitly. 
Any
> reason for not letting the script itself decide how to invoke python?

I could not make that work in Windows.