flightgear: use system sqlite

Also unbreak aarch64.

srcpkgs/flightgear/template

@@ -1,9 +1,9 @@
 # Template file for 'flightgear'
 pkgname=flightgear
 version=2017.2.1
-revision=2
+revision=3
 build_style=cmake
-configure_args="-DFG_DATA_DIR:STRING=/usr/share/flightgear/fgdata"
+configure_args="-DFG_DATA_DIR:STRING=/usr/share/flightgear/fgdata -DSYSTEM_SQLITE=1"
 hostmakedepends="fltk pkg-config"
 makedepends="MesaLib-devel boost-devel freealut-devel libfreeglut-devel fltk-devel
  libgsm-devel glew-devel speex-devel sqlite-devel osg-devel plib-devel libcurl-devel
@@ -13,10 +13,10 @@ short_desc="Sophisticated flight simulator"
 maintainer="Jürgen Buchmüller <pullmoll@t-online.de>"
 license="GPL-3"
 homepage="http://www.flightgear.org/"
+#_mirror=http://mirror.netcologne.de/gentoo/distfiles
 distfiles="
  $SOURCEFORGE_SITE/project/flightgear/release-${version%.*}/${pkgname}-${version}.tar.bz2
  $SOURCEFORGE_SITE/project/flightgear/release-${version%.*}/FlightGear-${version}-data.tar.bz2"
-_mirror=http://mirror.netcologne.de/gentoo/distfiles
 checksum="
  c7d9a63736cafd02236707d0f8e1bb36884a1a989cf49575bad13b4cbb311f5b
  c9350e4500a1d97ebc515e7bb9e74081a8726a8fa244966543c9c67bcdacd1a4"
@@ -30,7 +30,6 @@ esac
 build_options="qt"
 build_options_default="qt"
 if [ "$CROSS_BUILD" ]; then
-	configure_args+=" -DSIMGEAR_COMPILE_TEST_EXITCODE=0"
 	hostmakedepends+=" qt5-host-tools $(vopt_if qt 'qt5-devel qt5-declarative-devel')"
 fi
 # Suppress warnings regarding auto_ptr