2018-03-29, Version 4.9.1 'Argon' (Maintenance)

Notable changes:

No additional commits.

Due to incorrect staging of the upgrade to the GCC 4.9.X compiler, the
latest releases for PPC little endian were built using GCC 4.9.X
instead of GCC 4.8.X. This caused an ABI breakage on PPCLE based
environments. This has been fixed in our infrastructure and we are
doing this release to ensure that the hosted binaries are adhering to
our platform support contract.

PR-URL: nodejs#19681

CHANGELOG.md

@@ -109,7 +109,8 @@ release.
 <a href="doc/changelogs/CHANGELOG_V6.md#6.0.0">6.0.0</a><br/>
   </td>
   <td valign="top">
-<b><a href="doc/changelogs/CHANGELOG_V4.md#4.9.0">4.9.0</a></b><br/>
+<b><a href="doc/changelogs/CHANGELOG_V4.md#4.9.1">4.9.1</a></b><br/>
+<a href="doc/changelogs/CHANGELOG_V4.md#4.9.0">4.9.0</a><br/>
 <a href="doc/changelogs/CHANGELOG_V4.md#4.8.7">4.8.7</a><br/>
 <a href="doc/changelogs/CHANGELOG_V4.md#4.8.6">4.8.6</a><br/>
 <a href="doc/changelogs/CHANGELOG_V4.md#4.8.5">4.8.5</a><br/>

doc/changelogs/CHANGELOG_V4.md

@@ -10,6 +10,7 @@
 </tr>
 <tr>
 <td valign="top">
+<a href="#4.9.1">4.9.1</a><br/>
 <a href="#4.9.0">4.9.0</a><br/>
 <a href="#4.8.7">4.8.7</a><br/>
 <a href="#4.8.6">4.8.6</a><br/>
@@ -71,6 +72,18 @@
 [Node.js Long Term Support Plan](https://github.com/nodejs/LTS) and
 will be supported actively until April 2017 and maintained until April 2018.
 
+<a id="4.9.1"></a>
+## 2018-03-29, Version 4.9.1 'Argon' (Maintenance), @MylesBorins
+
+### Notable Changes
+
+No additional commits.
+
+Due to incorrect staging of the upgrade to the GCC 4.9.X compiler, the latest releases for PPC little
+endian were built using GCC 4.9.X instead of GCC 4.8.X. This caused an ABI breakage on PPCLE based
+environments. This has been fixed in our infrastructure and we are doing this release to ensure that
+the hosted binaries are adhering to our platform support contract.
+
 <a id="4.9.0"></a>
 ## 2018-03-28, Version 4.9.0 'Argon' (Maintenance), @MylesBorins