Merge branch 'master' of https://github.com/bvanassche/fio

* 'master' of https://github.com/bvanassche/fio:
  Windows >= 7: Make fio_getaffinity() error reporting more detailed
  Windows: Uninline CPU affinity functions
  Windows: Use snprintf() instead of StringCch*()
  Include "oslib/asprintf.h" where necessary
  Windows: Remove more unused OS dependent code
  Change off64_t into uint64_t
  Fix the build in case FIO_HAVE_DISK_UTIL is not defined
  Windows: Fix multiple configure tests
  configure: Improve the getopt_long_only() test
  configure: Improve the ibverbs test
  Makefile: Use 'tr' if 'fmt' is not available
  Makefile: Avoid duplicating code