Merge branch 'master' of github.com:cloudius-systems/osv

* 'master' of github.com:cloudius-systems/osv:
  Changes misleading pci_conf_read/write to virtio_conf_read/write
  Split virtio_driver to virtio_device and virtio_driver
  external: update glibc-testsuite for .gitignore
  build: document Java build rules
  build: make ant quieter on quiet builds
  main: go back to running the payload, not tests
  build: allow setting the command line during build
  tests: add Java microbenchmark suite
  java: add support for launching a jar file
  bootfs: add currency.data
  add a manifest where the libc files come from
  add a real __assert_fail from musl
  add a basic bio layer