Makefile: Remove config.status and common.env during 'make distclean'

config.status and tests/qemu-iotests/common.env are generated files
that should be deleted during 'make distclean'.

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

Makefile

@@ -313,8 +313,8 @@ qemu-%.tar.bz2:
 
 distclean: clean
 	rm -f config-host.mak config-host.h* config-host.ld $(DOCS) qemu-options.texi qemu-img-cmds.texi qemu-monitor.texi
-	rm -f config-all-devices.mak config-all-disas.mak
-	rm -f po/*.mo
+	rm -f config-all-devices.mak config-all-disas.mak config.status
+	rm -f po/*.mo tests/qemu-iotests/common.env
 	rm -f roms/seabios/config.mak roms/vgabios/config.mak
 	rm -f qemu-doc.info qemu-doc.aux qemu-doc.cp qemu-doc.cps qemu-doc.dvi
 	rm -f qemu-doc.fn qemu-doc.fns qemu-doc.info qemu-doc.ky qemu-doc.kys