Allow the 'QtPrinter' header to be found, as described
at <https://github.com/LuminanceHDR/LuminanceHDR/issues/11>.

diff --git a/CMakeLists.txt b/CMakeLists.txt
index fbad8a2..8379c8a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,6 +29,7 @@ find_package(Qt5Xml)
 find_package(Qt5Sql)
 find_package(Qt5Network)
 find_package(Qt5LinguistTools)
+find_package(Qt5PrintSupport REQUIRED)
 IF(WIN32)
 	find_package(Qt5WinExtras)
 ENDIF()
diff --git a/src/HelpBrowser/CMakeLists.txt b/src/HelpBrowser/CMakeLists.txt
index 04319a8..5537dae 100644
--- a/src/HelpBrowser/CMakeLists.txt
+++ b/src/HelpBrowser/CMakeLists.txt
@@ -29,7 +29,7 @@ QT5_WRAP_UI(FILES_UI_H ${FILES_UI})
 
 
 ADD_LIBRARY(helpbrowser ${FILES_H} ${FILES_CPP} ${FILES_MOC} ${FILES_UI_H} ${FILES_HXX})
-qt5_use_modules(helpbrowser Core Concurrent Gui Widgets Xml WebKit WebKitWidgets)
+qt5_use_modules(helpbrowser Core Concurrent Gui Widgets Xml WebKit WebKitWidgets PrintSupport)
 
 SET(FILES_TO_TRANSLATE ${FILES_TO_TRANSLATE} ${FILES_CPP} ${FILES_H} ${FILES_UI} ${FILES_HXX} PARENT_SCOPE)
 SET(LUMINANCE_MODULES_GUI ${LUMINANCE_MODULES_GUI} helpbrowser PARENT_SCOPE)
cf81ec078a260eae894c'>refs</a><a class='active' href='/guix/log/gnu/system/mapped-devices.scm'>log</a><a href='/guix/tree/gnu/system/mapped-devices.scm?id=a5e13c3be907f143ac54cf81ec078a260eae894c'>tree</a><a href='/guix/commit/gnu/system/mapped-devices.scm?id=a5e13c3be907f143ac54cf81ec078a260eae894c'>commit</a><a href='/guix/diff/gnu/system/mapped-devices.scm?id=a5e13c3be907f143ac54cf81ec078a260eae894c'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/system/mapped-devices.scm'>
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<div class='path'>path: <a href='/guix/log/?id=a5e13c3be907f143ac54cf81ec078a260eae894c'>root</a>/<a href='/guix/log/gnu?id=a5e13c3be907f143ac54cf81ec078a260eae894c'>gnu</a>/<a href='/guix/log/gnu/system?id=a5e13c3be907f143ac54cf81ec078a260eae894c'>system</a>/<a href='/guix/log/gnu/system/mapped-devices.scm?id=a5e13c3be907f143ac54cf81ec078a260eae894c'>mapped-devices.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/system/mapped-devices.scm?id=a5e13c3be907f143ac54cf81ec078a260eae894c&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2017-01-24 23:09:10 +0100'>2017-01-24</span></td><td><a href='/guix/commit/gnu/system/mapped-devices.scm?id=d6d1cea624ad6869e4099672092516d7383204dc'>mapped-devices: 'source' can be a list of strings.</a><span class='msg-avail'>...<span class='msg-tooltip'>Reported by myglc2 &lt;myglc2@gmail.com&gt;.

* gnu/system/mapped-devices.scm (&lt;mapped-device&gt;)[source]: Update
comment to note that this can be a list of strings.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2016-11-23 21:13:18 +0100'>2016-11-23</span></td><td><a href='/guix/commit/gnu/system/mapped-devices.scm?id=b7d408ec1b591853b4a2fc209e577d60b147e03b'>mapped-devices: Use 'cryptsetup-static' in 'luks-device-mapping'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/system/mapped-devices.scm (open-luks-device): Use
CRYPTSETUP-STATIC instead of CRYPTSETUP.  Use 'file-append'.
(close-luks-device): Likewise.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2016-10-27 13:48:52 +0200'>2016-10-27</span></td><td><a href='/guix/commit/gnu/system/mapped-devices.scm?id=4ed2f515d69a199154c272997f4683b89ac0a9b8'>mapped-devices: Use 'mdadm-static' in 'raid-device-mapping'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/system/mapped-devices.scm (open-raid-device, close-raid-device):
Use MDADM-STATIC instead of MDADM.  Use 'file-append'.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2016-10-04 19:51:53 +0200'>2016-10-04</span></td><td><a href='/guix/commit/gnu/system/mapped-devices.scm?id=6e52376d2e6c9ef849bd46b2ee72b58ad30d1947'>mapped-devices: Properly open RAID devices.</a><span class='msg-avail'>...<span class='msg-tooltip'>This fixes a type error introduced in
7f8ad82bf23b032ad6bd85bb1daa87cc83de509c, given that SOURCES is a list.

* gnu/system/mapped-devices.scm (open-raid-device): Add 'apply'
invocation.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2016-09-05 00:06:47 +0200'>2016-09-05</span></td><td><a href='/guix/commit/gnu/system/mapped-devices.scm?id=239c6e276214813f59f761c9dc5cc0e9d266b49b'>system: Use 'source-module-closure' where needed.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/system/vm.scm (%vm-module-closure): Remove.
(expression-&gt;derivation-in-linux-vm): Use 'source-module-closure'
instead of %VM-MODULE-CLOSURE.
(qemu-image): Likewise.
* gnu/system/linux-initrd.scm (expression-&gt;initrd): Likewise.
(flat-linux-module-directory, base-initrd): Likewise.
* gnu/system/mapped-devices.scm (open-luks-device): Likewise.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2016-08-03 00:07:06 +0200'>2016-08-03</span></td><td><a href='/guix/commit/gnu/system/mapped-devices.scm?id=10618627bfe210f4ec84ab3018f12840704a11e0'>mapped-devices: raid-device-mapping: Avoid non-top-level 'use-modules'.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;http://bugs.gnu.org/24135&gt;.
Reported by myglc2 &lt;myglc2@gmail.com&gt;.

* gnu/system/mapped-devices.scm (open-raid-device): Avoid non-top-level
'use-modules' form.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2016-08-02 13:53:25 +0200'>2016-08-02</span></td><td><a href='/guix/commit/gnu/system/mapped-devices.scm?id=873b51b34057d9d13c628289f57b10dec07b2060'>mapped-devices: Bail out when RAID sources don't show up.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/system/mapped-devices.scm (open-raid-device): Bail out after 20
loop iterations.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2016-08-02 13:53:25 +0200'>2016-08-02</span></td><td><a href='/guix/commit/gnu/system/mapped-devices.scm?id=7f8ad82bf23b032ad6bd85bb1daa87cc83de509c'>mapped-devices: Make RAID device opening message clearer.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/system/mapped-devices.scm (open-raid-device): Rename 'source' to
'sources'.  Make 'waiting' message more informative.
(close-raid-device): Rename 'source' to 'sources'.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2016-08-02 13:53:25 +0200'>2016-08-02</span></td><td><a href='/guix/commit/gnu/system/mapped-devices.scm