- More correct patch description for 0512, no functional changes
* updates 0512-Make-binutils-optional-when-elfutils-are-available.patch

- Require version >= 3.18 btrfsprogs, rather than conflicting with
an older one

- Fix subnet calculation in mkinitrd (bsc#1035743)
* adds 0516-mkinitrd-suse.sh-Fix-prefix-calculation.patch

- Conflict with older btrfsprogs < 3.18 bsc#1035518
* otherwise when zypper duping we are not able to generate intrd
until the btrfsprogs are updated, this way we force the app
to be update beforehand (13.1 and SLE11 migrations)