glib-2.0: improve determinism for GIO ptests

Previously the GIO tests would be built or not depending on whether the host had
a dbus-daemon binary available.  Fix this by seeding the AC_CHECK_PROGS check
with the right value, and adding a RDEPENDS for dbus-daemon on the target.

(From OE-Core rev: 1944c9a1764105c15844c7dbf1d430389c02b631)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/glib-2.0/glib.inc

@@ -45,6 +45,9 @@ EXTRA_OECONF = "${PRINTF} ${CORECONF}"
 EXTRA_OECONF_class-native = "${CORECONF} --disable-selinux"
 EXTRA_OECONF_append_libc-uclibc = " --with-libiconv=gnu"
 
+# Tell configure that we'll have dbus-daemon on the target for the tests
+EXTRA_OECONF_class-target_append = " ${@bb.utils.contains('PTEST_ENABLED', '1', ' ac_cv_prog_DBUS_DAEMON=dbus-daemon', '', d)}"
+
 do_configure_prepend() {
 	sed -i -e '1s,#!.*,#!${USRBINPATH}/env python3,' ${S}/gio/gdbus-2.0/codegen/gdbus-codegen.in
 }
@@ -113,6 +116,7 @@ do_install_append_class-target () {
 }
 
 RDEPENDS_${PN}-ptest += "\
+            dbus \
             gnome-desktop-testing \
             tzdata \
             tzdata-americas \