Merge pull request #7316 from ceph/wip-deb-lttng-hammer

deb: strip tracepoint libraries from Wheezy/Precise builds

All other "modern" Debian-based OSes have a functional LTTng-UST. Since only hammer needs to build on these older distros, this fix only affects the deb building process for those two releases(since autoconf detects that LTTng is broken).

Reviewed-by: Loic Dachary <ldachary@redhat.com>