- Update Xen patches to 3.17-final and c/s 1266.
Revert "supported.conf: i2c-core -> i2core." - the respective
upstream change got reverted too.

This reverts commit 602eb759ffd78c04efb82a041167718d98180ffd.
block: copy bi_vcnt in __bio_clone_fast (boo#888259).