test, build: fix Android NDK r9c compatibility

[ghost]

r9c removed the toolchain currently used, and e403a2c introduced a test that fails when built against the NDK.

More info on both:
http://www.gnu.org/savannah-checkouts/gnu/libc/manual/html_node/Permission-Bits.html
http://developer.android.com/tools/sdk/ndk/index.html#Revisions

[Nodejs-Jenkins]

Thank you for contributing this pull request! Here are a few pointers to make sure your submission will be considered for inclusion.

Commit lgierth/libuv@070c9b1a73bb6a5a79ec3d36c0bac71cc1e39f4d has the following error(s):

• First line of commit message must be no longer than 50 characters
• Commit message must indicate the subsystem this commit changes
• Commit message line too long: 3

Commit lgierth/libuv@63d559797aed8e4407f2a2166db1f2b19b8e67f8 has the following error(s):

• Commit message must indicate the subsystem this commit changes

The following commiters were not found in the CLA:

• Lars Gierth

You can fix all these things without opening another issue.

Please see CONTRIBUTING.md for more information

[ghost]

I'm not sure about these failing tests, they don't seem related to my changes.

[ghost]

I addressed Jenkins' comments

[saghul]

LGTM, have you signed the CLA?

[saghul]

Thanks @lgierth! Landed in 1ad6180 and cd67e10.

[ghost]

and e403a2c introduced a test that fails when built against the NDK.

That should actually say "fails to build against the NDK". A failing test is ok, but the latest v0.11.x doesn't even build against the NDK.