Merge branch 'djvu_plugins' into 'master'

Initial ucam package for DjVu Plugins v6.1.4.35472

See merge request !58

packages/djvu_plugins.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<packages:packages xmlns:packages="http://www.wpkg.org/packages">
+
+  <package id="djvu_plugin" name="DjVu plugin" revision="%version%.%rversion%.1" reboot="false" priority="14">
+	<variable name="version" value="6.1.4" />
+  <variable name="tenthsversion" value="6.1" />
+  <variable name="rversion" value="35472" />
+
+	<check type="uninstall" condition="versiongreaterorequal" path="Document Express DjVu Plug-in" value="%tenthsversion%.%rversion%" />
+
+	<install cmd='msiexec /l* %WPKGLOGDIR%\djvu_plugin-%version%.%rversion%.log /qn /i "%WPKGSOFTWARE%\djvu\browser_plugin\djvuctrl-x64-%version%-en-r%rversion%.msi"' />
+
+  <upgrade include="remove" />
+  <upgrade include="install" />
+
+	<remove cmd='msiexec /qn /x {3677A6FF-9C6F-48B7-B0DC-E958C2FE4FFF}' />
+  </package>
+
+ </packages:packages>