Fix regression in resolve

[jseyfried]

This fixes a regression caused by #31461 allowing extern crates to be glob imported, and it fixes the test that was supposed to catch it.
r? @nrc

[jseyfried]

When writing #31461, it slipped my mind that #31362 is not yet merged and glob imports still have to specifically disallow extern crates.

[jseyfried]

@nrc This regression causes at least 18 crates to break (all the fixed crates in the crater run linked in #31362). I think we should merge this PR (or #31362) ASAP.

[nrc]

@bors: r+

[bors]

📌 Commit 9189463 has been approved by nrc

[bors]

⌛ Testing commit 9189463 with merge 4e9cc69...

[bors]

💔 Test failed - auto-win-gnu-32-nopt-t

[alexcrichton]

@bors: retry

On Sun, Feb 14, 2016 at 6:47 PM, bors [email protected] wrote:

[image: 💔] Test failed - auto-win-gnu-32-nopt-t
http://buildbot.rust-lang.org/builders/auto-win-gnu-32-nopt-t/builds/3097

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#31566 (comment).

[bors]

⌛ Testing commit 9189463 with merge 69ad912...

[bors]

☀️ Test successful - auto-linux-32-nopt-t, auto-linux-32-opt, auto-linux-64-debug-opt, auto-linux-64-nopt-t, auto-linux-64-opt, auto-linux-64-x-android-t, auto-linux-cross-opt, auto-linux-musl-64-opt, auto-mac-32-opt, auto-mac-64-nopt-t, auto-mac-64-opt, auto-mac-ios-opt, auto-win-gnu-32-nopt-t, auto-win-gnu-32-opt, auto-win-gnu-64-nopt-t, auto-win-gnu-64-opt, auto-win-msvc-32-opt, auto-win-msvc-64-opt