changed entry points naming conventions based on feedback with
  Karel Zak
Daniel

  one.
* include/libxen.h src/libxen.c src/libxen_sym.version: extend API
  start to access libxenctrl directly (need xen update to get includes)
* src/xensh.c: access to both xenstore and hypervisor
Daniel

* include/libxen.h src/libxen.c src/libxen_sym.version: adding new
  entry points
Daniel

  implement xenopenconnect and xencloseconnect.
Daniel

Daniel

* include/libxen.h src/libxen.c src/libxen_sym.version: extended
  entry points to a first minimal set.
* src/internal.h: TODO macro
Daniel

  config.h.in configure.in: fix make dist, add rpm packaging
* src/libxen_sym.version src/Makefile.am: set a policy of no
  export by default of library symbols
Daniel

  configure to start working
* src/Makefile.am src/internal.h src/libxen.c: make the first compile
Daniel