Merge remote-tracking branch 'kwolf/for-anthony' into staging

* kwolf/for-anthony: (41 commits)
  fdc-test: Clean up a bit
  fdc-test: introduce test_relative_seek
  fdc: fix relative seek
  qemu-iotests: Valgrind support
  coroutine-ucontext: Help valgrind understand coroutines
  qemu-io: Fix memory leaks
  hw/block-common: Factor out fall back to legacy -drive cyls=...
  blockdev: Don't limit DriveInfo serial to 20 characters
  hw/block-common: Factor out fall back to legacy -drive serial=...
  hw/block-common: Move BlockConf & friends from block.h
  Relax IDE CHS limits from 16383,16,63 to 65535,16,255
  blockdev: Drop redundant CHS validation for if=ide
  hd-geometry: Compute BIOS CHS translation in one place
  qtest: Test we don't put hard disk info into CMOS for a CD-ROM
  ide pc: Put hard disk info into CMOS only for hard disks
  block: Geometry and translation hints are now useless, purge them
  qtest: Cover qdev property for BIOS CHS translation
  ide: qdev property for BIOS CHS translation
  qdev: New property type chs-translation
  qdev: Collect private helpers in one place
  ...