gnome-online-accounts: fix for libtool>=2.4.6

Always requires gnome-introspection for autoreconf to find
introspection.m4. It is disabled for cross through configure_args.

srcpkgs/gnome-online-accounts/template

@@ -1,14 +1,14 @@
 # Template file for 'gnome-online-accounts'
 pkgname=gnome-online-accounts
 version=3.18.1
-revision=1
+revision=2
 build_style=gnu-configure
-configure_args="
+configure_args="$(vopt_enable gir introspection)
  --enable-google --enable-kerberos --enable-flickr --enable-telepathy
  --enable-facebook --disable-static --enable-exchange  --enable-imap-smtp
  --enable-owncloud --enable-windows-live --disable-twitter --enable-yahoo"
 hostmakedepends="pkg-config intltool libxslt docbook-xsl glib-devel
- $(vopt_if gir gobject-introspection) libtool"
+ gobject-introspection automake gettext-devel libtool"
 makedepends="libsoup-gnome-devel webkit2gtk-devel json-glib-devel libnotify-devel
  rest-devel gcr-devel libsecret-devel mit-krb5-devel dbus-glib-devel telepathy-glib-devel"
 depends="hicolor-icon-theme"
@@ -25,7 +25,9 @@ if [ -z "$CROSS_BUILD" ]; then
 fi
 
 pre_configure() {
-	libtoolize -f
+	autoreconf -if
+	# This line generates an error (no gnome-compiler-flags.m4?)
+	sed -i configure -e "/GNOME_COMPILE_WARNINGS(maximum)/d"
 	export CFLAGS+=" -I$PWD/telepathy-account-widgets"
 }