dbus: include dbus-launch in the main dbus package

Followed suggestions from Bugz 2261:

2) make the virtual/libx11 DEPENDS conditional based on the x11 distro feature.
This makes the build dependencies reflect the feature list.

3) remove dbus-x11, meaning that dbus-launch with its potential X11 dependency
is now back in dbus where is belongs.

4) make dbus provide dbus-x11, for compatibility.

Fixes [Yocto #2261]

(From OE-Core rev: c02364f36e228835ea5d7fd4e1d347fd451f8544)

Signed-off-by: Radu Moisan <radu.moisan@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/dbus/dbus.inc

@@ -31,10 +31,11 @@ CONFFILES_${PN} = "${sysconfdir}/dbus-1/system.conf ${sysconfdir}/dbus-1/session
 
 DEBIANNAME_${PN} = "dbus-1"
 
-PACKAGES =+ "${PN}-lib ${PN}-systemd ${@base_contains('DISTRO_FEATURES', 'x11', '${PN}-x11', '', d)}"
+PACKAGES =+ "${PN}-lib ${PN}-systemd"
 
-FILES_${PN}-x11 = "${bindir}/dbus-launch"
-RDEPENDS_${PN}-x11 = "${PN}"
+# for compatibility
+RPROVIDES_${PN} = "dbus-x11"
+RREPLACES_${PN} += "dbus-x11"
 
 FILES_${PN}-systemd = "${systemd_unitdir}/system/"
 
@@ -43,6 +44,7 @@ FILES_${PN} = "${bindir}/dbus-daemon* \
                ${bindir}/dbus-cleanup-sockets \
                ${bindir}/dbus-send \
                ${bindir}/dbus-monitor \
+               ${bindir}/dbus-launch \
                ${libexecdir}/dbus* \
                ${sysconfdir} \
                ${localstatedir} \
@@ -59,7 +61,7 @@ pkg_postinst_dbus() {
 }
 
 EXTRA_OECONF_X = "${@base_contains('DISTRO_FEATURES', 'x11', '--with-x', '--without-x', d)}"
-EXTRA_OECONF_X_virtclass-native = "--without-x"
+EXTRA_OECONF_X_virtclass-native = "--disable-x11-autolaunch"
 
 EXTRA_OECONF = "--disable-tests \
                 --disable-checks \