[giggle] build: Upgrade gettext to not update .po files in every build

[Javier Jardón <jjardon src gnome org>]

commit 3d501e5cc8ff7132529f5339dd1b98c4a18cbae4
Author: Javier Jardón <jjardon gnome org>
Date:   Fri Feb 20 23:36:25 2015 +0000

    build: Upgrade gettext to not update .po files in every build

 configure.ac |    2 +-
 po/Makevars  |   25 +++++++++++++++++++++++++
 2 files changed, 26 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 72e7bd1..9a25fae 100644
--- a/configure.ac
+++ b/configure.ac
@@ -134,7 +134,7 @@ AC_RUN_IFELSE(
 dnl  ------------------
 dnl | Language Support |---------------------------------------
 dnl  ------------------
-AM_GNU_GETTEXT_VERSION([0.18.3])
+AM_GNU_GETTEXT_VERSION([0.19.4])
 AM_GNU_GETTEXT([external])
 
 AC_SUBST([GETTEXT_PACKAGE], [giggle])
diff --git a/po/Makevars b/po/Makevars
index b603fcd..df09a7b 100644
--- a/po/Makevars
+++ b/po/Makevars
@@ -20,6 +20,13 @@ XGETTEXT_OPTIONS = --keyword=_ --keyword=N_ --from-code=UTF-8
 # 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
@@ -51,3 +58,21 @@ USE_MSGCTXT = no
 #   --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