Auto merge of #26532 - servo:dependabot/cargo/clang-sys-0.28.1, r=jdm

Bump clang-sys from 0.28.0 to 0.28.1

Bumps [clang-sys](https://github.com/KyleMayes/clang-sys) from 0.28.0 to 0.28.1.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/KyleMayes/clang-sys/blob/master/CHANGELOG.md">clang-sys's changelog</a>.</em></p>
<blockquote>
<h2>[0.28.1] - 2019-07-28</h2>
<h3>Changed</h3>
<ul>
<li>Bumped <code>glob</code> version to <code>0.3.0</code></li>
<li>Improved error message when an invocation of an executable is not successful</li>
<li>Allowed <code>LIBCLANG_PATH</code> to refer to a specific <code>libclang</code> instance (e.g.,
<code>/usr/local/lib/libclang.so.10</code>)</li>
</ul>
<h3>Fixed</h3>
<ul>
<li>Fixed
<a href="90d6722bdc"><code>libclang-cpp</code></a>
being linked instead of <code>libclang</code></li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="fe178611de"><code>fe17861</code></a> Bump version</li>
<li><a href="e6372d73c8"><code>e6372d7</code></a> Allow LIBCLANG_PATH to refer to a specific libclang instance</li>
<li><a href="0f12c6fc80"><code>0f12c6f</code></a> Improve error message for failed executable invocations</li>
<li><a href="32eaefa0ce"><code>32eaefa</code></a> Update Appveyor CI</li>
<li><a href="9ded894edb"><code>9ded894</code></a> Fix conflict caused by libclang-cpp</li>
<li><a href="e3a9fb35d8"><code>e3a9fb3</code></a> Refactor</li>
<li><a href="75ee92acab"><code>75ee92a</code></a> Run rustfmt</li>
<li><a href="5795507f82"><code>5795507</code></a> Replace OS X with macOS</li>
<li><a href="ec2625cf42"><code>ec2625c</code></a> Update CHANGELOG.md</li>
<li><a href="a562e9a478"><code>a562e9a</code></a> Update glob to 0.3 (<a href="https://github-redirect.dependabot.com/KyleMayes/clang-sys/issues/90">#90</a>)</li>
<li>Additional commits viewable in <a href="https://github.com/KyleMayes/clang-sys/compare/v0.28.0...v0.28.1">compare view</a></li>
</ul>
</details>
<br />

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Cargo.lock

@@ -635,9 +635,9 @@ dependencies = [
 
 [[package]]
 name = "clang-sys"
-version = "0.28.0"
+version = "0.28.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4227269cec09f5f83ff160be12a1e9b0262dd1aa305302d5ba296c2ebd291055"
+checksum = "81de550971c976f176130da4b2978d3b524eaa0fd9ac31f3ceb5ae1231fb4853"
 dependencies = [
  "glob",
  "libc",
@@ -2017,9 +2017,9 @@ dependencies = [
 
 [[package]]
 name = "glob"
-version = "0.2.11"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8be18de09a56b60ed0edf84bc9df007e30040691af7acd1c41874faac5895bfb"
+checksum = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
 
 [[package]]
 name = "glslopt"