build: distribute missing file

Commit f30ccb24 was incomplete.

* .gitignore: Ignore intermediate directory during failed 'make
distcheck'.
* tests/Makefile.am (qemuhelpdata): Distribute new file.

.gitignore

@@ -10,6 +10,7 @@
 .git-module-status
 .sc-start-sc_*
 /GNUmakefile
+/libvirt-[0-9]*
 /maint.mk
 ABOUT-NLS
 COPYING

tests/Makefile.am

@@ -46,7 +46,8 @@ qemuhelpdata = \
 	qemu-0.10.5 \
 	qemu-0.12.1 \
 	qemu-kvm-0.10.5 \
-	qemu-kvm-0.11.0-rc2
+	qemu-kvm-0.11.0-rc2 \
+	qemu-kvm-0.12.3
 
 EXTRA_DIST =		\
         oomtrace.pl     \