[libgovirt] build-sys: Use upstream gettext instead intltool

[Christophe Fergeau <teuf src gnome org>]

commit f4ba881cab946e45c856f95c9b8a40f134694cf6
Author: Javier Jardón <jjardon gnome org>
Date:   Thu Jul 28 21:28:22 2016 +0100

    build-sys: Use upstream gettext instead intltool
    
    https://bugzilla.gnome.org/show_bug.cgi?id=769286

 Makefile.am  |   13 ---------
 configure.ac |    3 +-
 po/Makevars  |   78 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 80 insertions(+), 14 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index bc096ac..3d867ca 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -6,18 +6,6 @@ SUBDIRS =                                              \
        po                                              \
        tests
 
-INTLTOOL_FILES =                                       \
-       intltool-extract.in                             \
-       intltool-merge.in                               \
-       intltool-update.in                              \
-       $(NULL)
-
-DISTCLEANFILES =                                       \
-       intltool-extract                                \
-       intltool-merge                                  \
-       intltool-update                                 \
-       $(NULL)
-
 EXTRA_DIST =                                           \
        COPYING                                         \
        MAINTAINERS                                     \
@@ -27,7 +15,6 @@ EXTRA_DIST =                                          \
        NEWS                                            \
        autogen.sh                                      \
        libgovirt.doap                                  \
-       $(INTLTOOL_FILES)                               \
        $(NULL)
 
 MAINTAINERCLEANFILES =                                 \
diff --git a/configure.ac b/configure.ac
index ea88ef1..c9e01f1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -52,7 +52,8 @@ LT_PREREQ([2.2])
 LT_INIT
 
 # i18 support
-IT_PROG_INTLTOOL(0.40.0)
+AM_GNU_GETTEXT_VERSION([0.19.4])
+AM_GNU_GETTEXT([external])
 
 GETTEXT_PACKAGE=AC_PACKAGE_NAME
 AC_SUBST(GETTEXT_PACKAGE)
diff --git a/po/Makevars b/po/Makevars
new file mode 100644
index 0000000..579ebd1
--- /dev/null
+++ b/po/Makevars
@@ -0,0 +1,78 @@
+# Makefile variables for PO directory in any package using GNU gettext.
+
+# Usually the message domain is the same as the package name.
+DOMAIN = $(PACKAGE)
+
+# These two variables depend on the location of this directory.
+subdir = po
+top_builddir = ..
+
+# These options get passed to xgettext.
+XGETTEXT_OPTIONS = --keyword=_ --keyword=N_
+
+# This is the copyright holder that gets inserted into the header of the
+# $(DOMAIN).pot file.  Set this to the copyright holder of the surrounding
+# package.  (Note that the msgstr strings, extracted from the package's
+# sources, belong to the copyright holder of the package.)  Translators are
+# expected to transfer the copyright for their translations to this person
+# or entity, or to disclaim their copyright.  The empty string stands for
+# the public domain; in this case the translators are expected to disclaim
+# their copyright.
+COPYRIGHT_HOLDER = Free Software Foundation, Inc.
+
+# This tells whether or not to prepend "GNU " prefix to the package
+# name that gets inserted into the header of the $(DOMAIN).pot file.
+# Possible values are "yes", "no", or empty.  If it is empty, try to
+# detect it automatically by scanning the files in $(top_srcdir) for
+# "GNU packagename" string.
+PACKAGE_GNU =
+
+# This is the email address or URL to which the translators shall report
+# bugs in the untranslated strings:
+# - Strings which are not entire sentences, see the maintainer guidelines
+#   in the GNU gettext documentation, section 'Preparing Strings'.
+# - Strings which use unclear terms or require additional context to be
+#   understood.
+# - Strings which make invalid assumptions about notation of date, time or
+#   money.
+# - Pluralisation problems.
+# - Incorrect English spelling.
+# - Incorrect formatting.
+# It can be your email address, or a mailing list address where translators
+# can write to without being subscribed, or the URL of a web page through
+# which the translators can contact you.
+MSGID_BUGS_ADDRESS =
+
+# This is the list of locale categories, beyond LC_MESSAGES, for which the
+# message catalogs shall be used.  It is usually empty.
+EXTRA_LOCALE_CATEGORIES =
+
+# This tells whether the $(DOMAIN).pot file contains messages with an 'msgctxt'
+# context.  Possible values are "yes" and "no".  Set this to yes if the
+# package uses functions taking also a message context, like pgettext(), or
+# if in $(XGETTEXT_OPTIONS) you define keywords with a context argument.
+USE_MSGCTXT = no
+
+# These options get passed to msgmerge.
+# Useful options are in particular:
+#   --previous            to keep previous msgids of translated messages,
+#   --quiet               to reduce the verbosity.
+MSGMERGE_OPTIONS =
+
+# These options get passed to msginit.
+# If you want to disable line wrapping when writing PO files, add
+# --no-wrap to MSGMERGE_OPTIONS, XGETTEXT_OPTIONS, and
+# MSGINIT_OPTIONS.
+MSGINIT_OPTIONS =
+
+# This tells whether or not to regenerate a PO file when $(DOMAIN).pot
+# has changed.  Possible values are "yes" and "no".  Set this to no if
+# the POT file is checked in the repository and the version control
+# program ignores timestamps.
+PO_DEPENDS_ON_POT = no
+
+# This tells whether or not to forcibly update $(DOMAIN).pot and
+# regenerate PO files on "make dist".  Possible values are "yes" and
+# "no".  Set this to no if the POT file and PO files are maintained
+# externally.
+DIST_DEPENDS_ON_UPDATE_PO = no