Make office2007-opencl choose vector width according to what device
says is best (up to 8 currently supported).
Make office2010-opencl choose vector width according to what device
says is best (up to 8 currently supported).
Make office2013-opencl choose vector width according to what device
says is best (up to 8 currently supported).
Merge branch 'bleeding-jumbo' into memdbg

* bleeding-jumbo:
  Make office2013-opencl choose vector width according to what device says is best (up to 8 currently supported).
  Make office2010-opencl choose vector width according to what device says is best (up to 8 currently supported).
  Make office2007-opencl choose vector width according to what device says is best (up to 8 currently supported).