* src/esx/esx_driver.c: remove leaks in esxDomainDumpXML() and simplify
  esxDomainXMLFromNative()

* src/esx/esx_*.[ch]: the driver, uses a remote minimal SOAP client
  to talk to the VI services on ESX nodes.
* configure.in include/libvirt/virterror.h src/Makefile.am src/driver.h
  src/libvirt.c src/virterror.c: glue in the new driver