lxc: collective update

This update fixes the following issues for lxc:
- create /etc/hostname as symlink to /etc/HOSTNAME
- fix inadequate space in lxc.mount config (lxc-clone fix)
- disable network in container if not configured
- configure network scripts properly
- Add lxc-snapshot-btrfs-lvm.patch: backport snapshot support, using btrfs or lvm2.
- Add lxc-opensuse-tmpfs.patch: ensure container shutting down is correctly detected by LXC.
- 723950: Add lxc-createconfig script to easy LXC configuration
- 750470: Accurately detect whether a system supports clone_children
- Drop lxc-file_caps.patch, it is SLES specific, since openSUSE is now shipping with file capabilities enabled
- 739315: Update lxc-opensuse-12.1.patch to correctly generate containers on x86
- 720845: fix detection of kernel 3.x and file capabilities
- 723946: Fix example path in manpages

Fixed bugs
bnc#723950
Add lxc-createconfig + manpage to the SUSE lxc package
bnc#750470
lxc-checkconfig says "Cgroup namespace: required" although cgroup already mounted
bnc#739315
LXC are completely broken on 32bit architecture
bnc#720845
lxc-checkconfig misreports File capabilities as missing and enabled at the same time
bnc#723946
lxc manpage has wrong path to example
Selected Binaries
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