* src/esx/esx_driver.c: if esxOpen failed, priv->transport wasn't freed

* src/esx/esx_driver.c: catch an unchecked strdup in
  esxDomainGetOSType()

* src/esx/esx_driver.c src/esx/esx_vi.[ch] src/esx/esx_vmx.[ch]:
  adds version checking for GSX 2.0, allows to pass a specific port
  for the connection and also add a new specific gsx scheme for
  easier connections to GSX hosts

* autobuild.sh, mingw32-libvirt.spec.in: Enable esx on mingw32
* src/esx/esx_driver.c: Define AI_ADDRCONFIG if not set
* src/esx/esx_util.c, src/esx/esx_vi_types.c: Always use
  %lld & friends, since gnulib guarentees we have these
  and not the target's own variants

* esx/esx_driver.c: add some documentation about the CPU scheduler
  parameters and remove some old, unnecessary compensation code, since
  virsh uses the proposed parameter types now.

* src/esx/esx_driver.c src/esx/esx_vi.c src/esx/esx_vi.h
  src/esx/esx_vmx.c src/esx/esx_vmx.h: extend the VI API version checks
  to accept version 4.0 and takes care of the virtualHW.version change
  from 4 to 7.

* src/esx/esx_driver.c src/esx/esx_util.c src/esx/esx_util.h
  src/esx/esx_vi.c src/esx/esx_vi.h: adds a no_verify query parameter to
  stop libcurl from verifying theserver certificate for the https
  transport.

* 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