build: always include sanitytest in tarball

The libvirt 1.0.5 tarball is missing a file which renders 'make
check' broken; first reported on list by Guido Günther.

* python/Makefile.am (EXTRA_DIST): Hoist sanitytest.py out of
HAVE_PYTHON conditional.
Signed-off-by: NEric Blake <eblake@redhat.com>

python/Makefile.am

 # Makefile for libvirt python library
 
-## Copyright (C) 2005-2012 Red Hat, Inc.
+## Copyright (C) 2005-2013 Red Hat, Inc.
 ## See COPYING.LIB for the License of this software
 
 SUBDIRS= . tests
@@ -40,6 +40,7 @@ EXTRA_DIST =			\
 	libvirt-lxc-override-api.xml \
 	libvirt-qemu-override.c	\
 	libvirt-qemu-override-api.xml \
+	sanitytest.py \
 	$(CLASSES_EXTRA) \
 	$(DOCS)
 
@@ -124,8 +125,6 @@ $(libvirtmod_la_OBJECTS): $(GENERATED)
 $(libvirtmod_qemu_la_OBJECTS): $(QEMU_GENERATED)
 $(libvirtmod_lxc_la_OBJECTS): $(LXC_GENERATED)
 
-EXTRA_DIST += sanitytest.py
-
 check-local:
 	$(AM_V_GEN)../run $(PYTHON) $(srcdir)/sanitytest.py