vdsm-tool: remove 'vdsm/tool/*.pyc' files on uninstallation

It's found that 'vdsm/tool/*.pyc' files are not removed on uninstallation.
It could cause a break after installing a different version vdsm. That's
because vdsm-tool tries to load all python modules under vdsm.tool. If the
requirements of these old modules can't be sytisfied by the new installed
packages, vdsm-tool will abort.

This problem is caused by a wrong target type for python files in
lib/vdsm/tool. They're not compiled during 'make install' and therefore
complied python files are not tracked by rpm.

This patch also fixes a wrong target name in CLEANFILES.

Change-Id: I5fd67f3fbcbf4c8f72180ba0129b0bc09b20def0
Signed-off-by: Mark Wu <wudxw@linux.vnet.ibm.com>
Reviewed-on: http://gerrit.ovirt.org/16761
Reviewed-by: Yaniv Bronhaim <ybronhei@redhat.com>
Reviewed-by: Dan Kenigsberg <danken@redhat.com>