build: clean up stray files found by 'make distcheck'

'make distcheck' complained:

ERROR: files left in build directory after distclean:
./python/libvirt.pyc
./tests/commandhelper.log

Problems introduced in commits f0154959 and 25ea8e47 (both v1.0.3).

* tests/commandtest.c (test21): Check (and clean) log file.
* tests/commanddata/test21.log: New file.
* python/Makefile.am (CLEANFILES): Clean up compiled python files.
Signed-off-by: NEric Blake <eblake@redhat.com>

python/Makefile.am

@@ -142,7 +142,8 @@ uninstall-local:
 	rm -f $(DESTDIR)$(pyexecdir)/libvirt_lxc.py
 	rm -f $(DESTDIR)$(pyexecdir)/libvirt_qemu.py
 
-CLEANFILES= $(GENERATED) $(QEMU_GENERATED) $(LXC_GENERATED) $(GENERATE).stamp
+CLEANFILES= $(GENERATED) $(QEMU_GENERATED) $(LXC_GENERATED) $(GENERATE).stamp \
+	*.pyc
 
 else
 all:

tests/commanddata/test21.log

+ENV:DISPLAY=:0.0
+ENV:HOME=/home/test
+ENV:HOSTNAME=test
+ENV:LANG=C
+ENV:LOGNAME=testTMPDIR=/tmp
+ENV:PATH=/usr/bin:/bin
+ENV:USER=test
+FD:0
+FD:1
+FD:2
+DAEMON:no
+CWD:/tmp

tests/commandtest.c

@@ -891,7 +891,7 @@ static int test21(const void *unused ATTRIBUTE_UNUSED)
         goto cleanup;
     }
 
-    ret = 0;
+    ret = checkoutput("test21");
 cleanup:
     VIR_FREE(outbuf);
     VIR_FREE(errbuf);