Fix build with gettext 0.20.x

Upstream-Status: Pending
Signed-off-by: Khem Raj <raj.khem@gmail.com>

--- a/Makefile.am
+++ b/Makefile.am
@@ -3,7 +3,7 @@
 ## If you don't want it to overwrite it,
 ## 	Please disable it in the Anjuta project configuration
 
-SUBDIRS = intl po src pixmaps
+SUBDIRS = po src pixmaps
 
 gtkperfdocdir = ${prefix}/doc/gtkperf
 gtkperfdoc_DATA = \
--- a/configure.in
+++ b/configure.in
@@ -31,8 +31,7 @@ AC_DEFINE_UNQUOTED(GETTEXT_PACKAGE, "$GE
 
 dnl Languages which your application supports
 ALL_LINGUAS=""
-AM_GNU_GETTEXT
-AM_GNU_GETTEXT_VERSION(0.10.40)
+AM_GNU_GETTEXT([external])
 
 dnl Set PACKAGE_LOCALE_DIR in config.h.
 if test "x${prefix}" = "xNONE"; then
@@ -100,7 +99,6 @@ AC_DEFINE_UNQUOTED(PACKAGE_SOURCE_DIR, "
 
 AC_OUTPUT([
 Makefile
-intl/Makefile
 po/Makefile.in
 src/Makefile
 pixmaps/Makefile