lvm2: use official release location as arranged with upstream

See http://www.redhat.com/archives/lvm-devel/2011-January/msg00002.html
for details.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/lvm2/lvm2.mk

@@ -5,7 +5,7 @@
 #############################################################
 LVM2_VERSION = 2.02.79
 LVM2_SOURCE = LVM2.$(LVM2_VERSION).tgz
-LVM2_SITE = ftp://sources.redhat.com/pub/lvm2
+LVM2_SITE = ftp://sources.redhat.com/pub/lvm2/releases
 LVM2_INSTALL_STAGING = YES
 
 LVM2_BINS = \