The .in.in file was added to the repo in 8bdfa6a4e56f. Then Gary added the .in file to POTFILES.in in 1d98555... but I think it should actually be the .in.in file, right?
# SOME DESCRIPTIVE TITLE.
# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
# This file is distributed under the same license as the PACKAGE package.
#
# Translators:
# Manoj Kumar Giri <mgiri@redhat.com>, 2009-2010
msgid""
msgstr""
"Project-Id-Version: Pidgin\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2014-11-22 10:22-0800\n"
"PO-Revision-Date: 2014-11-20 10:22+0000\n"
"Last-Translator: Richard Laager <rlaager@wiktel.com>\n"
msgid"This plugin is useful for debugging XMPP servers or clients."
msgstr""
msgid"The installer is already running."
msgstr""
msgid""
"An instance of Pidgin is currently running. Please exit Pidgin and try "
"again."
msgstr""
#. "Next >" appears on a button on the License Page of the Installer
msgid"Next >"
msgstr""
#. $(^Name) is the current Version name (e.g. Pidgin 2.7.0). $_CLICK will become a translated version of "Click Next to continue." DO NOT translate the CLICK in $_CLICK. It will break the installer.
msgid""
"$(^Name) is released under the GNU General Public License (GPL). The license "
"is provided here for information purposes only. $_CLICK"
msgstr""
#. Installer Subsection Text
msgid"Pidgin Instant Messaging Client (required)"
msgstr""
#. Installer Subsection Text
msgid"GTK+ Runtime (required if not present)"
msgstr""
#. Installer Subsection Text
msgid"Shortcuts"
msgstr""
#. Installer Subsection Text
msgid"Desktop"
msgstr""
#. Installer Subsection Text
msgid"Start Menu"
msgstr""
#. Installer Subsection Text
msgid"Localizations"
msgstr""
#. Installer Subsection Detailed Description
msgid"Core Pidgin files and dlls"
msgstr""
#. Installer Subsection Detailed Description
msgid"Shortcuts for starting Pidgin"
msgstr""
#. Installer Subsection Detailed Description
msgid"Create a shortcut to Pidgin on the Desktop"
msgstr""
#. Installer Subsection Detailed Description
msgid"Create a Start Menu entry for Pidgin"
msgstr""
#. Installer Subsection Detailed Description
msgid"A multi-platform GUI toolkit, used by Pidgin"
msgstr""
#. Installer Subsection Text
msgid"Debug Symbols (for reporting crashes)"
msgstr""
#. Text displayed on Installer Finish Page
msgid"Visit the Pidgin Web Page"
msgstr""
msgid""
"Unable to uninstall the currently installed version of Pidgin. The new "
"version will be installed without removing the currently installed version."
msgstr""
msgid""
"Pidgin requires a compatible GTK+ Runtime (which doesn't appear to be "
"already present).$\\rAre you sure you want to skip installing the GTK+ "
"Runtime?"
msgstr""
#. Installer Subsection Text
msgid"URI Handlers"
msgstr""
#. Installer Subsection Text
msgid"Spellchecking Support"
msgstr""
#. $R3 will display the URL that the Dictionary failed to download from