uninstall: do not remove kernels or modules on uninstall.

The pattern used is very broad and will delete any kernel with xen in
its filename, likewise modules, including those which come packages
from the distribution etc.

I don't think this was ever the right thing to do but it is doubly
wrong now that Xen does not even build or install a kernel by default.

Push cleanup of the installed hypervisor down into xen/Makefile so that
it can cleanup exactly what it actually installs.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Looks-good: Jan Beulich <JBeulich@suse.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>

Makefile

@@ -220,6 +220,7 @@ help:
 uninstall: D=$(DESTDIR)
 uninstall:
 	[ -d $(D)$(XEN_CONFIG_DIR) ] && mv -f $(D)$(XEN_CONFIG_DIR) $(D)$(XEN_CONFIG_DIR).old-`date +%s` || true
+	$(MAKE) -C xen uninstall
 	rm -rf $(D)$(CONFIG_DIR)/init.d/xendomains $(D)$(CONFIG_DIR)/init.d/xend
 	rm -rf $(D)$(CONFIG_DIR)/init.d/xencommons $(D)$(CONFIG_DIR)/init.d/xen-watchdog
 	rm -rf $(D)$(CONFIG_DIR)/hotplug/xen-backend.agent
@@ -228,8 +229,6 @@ uninstall:
 	rm -f  $(D)$(SYSCONFIG_DIR)/xendomains
 	rm -f  $(D)$(SYSCONFIG_DIR)/xencommons
 	rm -rf $(D)/var/run/xen* $(D)/var/lib/xen*
-	rm -rf $(D)/boot/*xen*
-	rm -rf $(D)/lib/modules/*xen*
 	rm -rf $(D)$(LIBDIR)/xen* $(D)$(BINDIR)/lomount
 	rm -rf $(D)$(BINDIR)/cpuperf-perfcntr $(D)$(BINDIR)/cpuperf-xen
 	rm -rf $(D)$(BINDIR)/xc_shadow