Description: Update autotools-related stuff.

--- a/configure.in
+++ b/configure.in
@@ -15,6 +15,7 @@ AC_INIT(gsmlib/gsm_error.h)
 
 dnl Other
 AC_CONFIG_AUX_DIR(scripts)
+AC_CONFIG_MACRO_DIR([m4])
 AC_PROG_INSTALL
 
 dnl check for libintl
@@ -34,6 +35,8 @@ if test "$CXXFLAGS" = ""; then
    CXXFLAGS="-O2"
 fi
 
+AC_USE_SYSTEM_EXTENSIONS
+
 dnl comment out this line to get extensive debugging output and asserts
 dnl CXXFLAGS="-DNDEBUG $CXXFLAGS"
 
--- /dev/null
+++ b/po/Makevars
@@ -0,0 +1,5 @@
+DOMAIN = $(PACKAGE)
+
+subdir = po
+top_builddir = ..
+
--- a/Makefile.am
+++ b/Makefile.am
@@ -11,6 +11,8 @@
 # * Created: 21.5.1999
 # *************************************************************************
 
+ACLOCAL_AMFLAGS = -I m4
+
 SUBDIRS_ =	po gsmlib apps tests doc scripts win32 ext
 
 EXTRA_DIST =	gsmlib.spec