[Android]: Update Makefile.android to use platform-14 as minimum.

[Android]: Update Makefile.android to use platform-14 as minimum.

The version of the NDK in Chromium only has platform/android-14 and above
(since Chrome only supports API 14 and above).  To make it easier for
developers to use the Chromium NDK to build V8, this CL updates the default
platform version to 14.

R=ulan@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=21159

[rmcilroy, 2014-05-02 15:13:25]

I don't think this should affect the bots, but please let me know if the bots
only include platform-9 for some reason.  PTAL, thanks.

[ulan, 2014-05-05 11:10:47]

lgtm, bots use Android NDK r9, which has platform-14.

[rmcilroy, 2014-05-06 09:08:07]

On 2014/05/05 11:10:47, ulan wrote:
> lgtm, bots use Android NDK r9, which has platform-14.

Thanks Ulan, landing.

[rmcilroy, 2014-05-06 09:08:59]

Committed patchset #1 manually as r21159 (presubmit successful).