Most of the hash iterators need to modify either payload of
data args. The const annotation prevents this.

* src/util/hash.h, src/util/hash.c: Remove const-ness from
  virHashForEach/Iterator
* src/xen/xm_internal.c: Remove bogus casts

* src/bridge.c, src/bridge.h, src/buf.c, src/buf.h, src/cgroup.c,
  src/cgroup.h, src/conf.c, src/conf.h, src/event.c, src/event.h,
  src/hash.c, src/hash.h, src/hostusb.c, src/hostusb.h,
  src/iptables.c, src/iptables.h, src/logging.c, src/logging.h,
  src/memory.c, src/memory.h, src/pci.c, src/pci.h, src/qparams.c,
  src/qparams.h, src/stats_linux.c, src/stats_linux.h,
  src/threads-pthread.c, src/threads-pthread.h, src/threads-win32.c,
  src/threads-win32.h, src/threads.c, src/threads.h, src/util.c,
  src/util.h, src/uuid.c, src/uuid.h, src/virterror.c,
  src/virterror_internal.h, src/xml.c, src/xml.h: Move all files
  into src/util/
* daemon/Makefile.am: Add -Isrc/util/ to build flags
* src/Makefile.am: Add -Isrc/util/ to build flags and update for
  moved files
* src/libvirt_private.syms: Export cgroup APIs since they're now
  in util rather than linking directly to drivers
* src/xen/xs_internal.c: Disable bogus virEventRemoveHandle call
  when built under PROXY
* proxy/Makefile.am: Update for changed file locations. Remove
  bogus build of event.c
* tools/Makefile.am, tests/Makefile.am: Add -Isrc/util/ to build flags

Done using this command (also includes .c.in and .h.in files):
for i in $(g ls-files|grep -E '\.[ch](\.in)?$'|grep -v gnulib); do
  expand -i $i > j && mv j $i;done

  src/xs_internal.c: implementing domain pointers unification, thread
  safety and reference counting for domain and connections, this was
  the last critical change needed before making further progresses at
  the API level. Still a couple fo things TODO for this, unification
  at the Python level and adding UUID to hash. All domain/connect alloc
  and free routines are now centralized in hash.c
* docs/APIchunk1.html docs/libvirt-api.xml docs/libvirt-refs.xml
  docs/html/libvirt-libvirt.html: regenerated the docs, that doesn't
  change the API.
Daniel

  src/sexpr.h src/virsh.c src/virterror.c src/xen_internal.c
  src/xen_internal.h src/xend_internal.c src/xend_internal.h
  src/xml.c src/xml.h: applied cb/indent to homogenize the source
  style, as a first pass.
Daniel

  version for python bindings, heavilly based on libxml2/libxslt
  way of doing things, maybe this need to be revisited. Added packaging
  too.
* src/hash.h: fixed the Copyright notice.
Daniel

  libvir.spec.in docs/Makefile.am docs/apibuild.py docs/structures.fig
  include/Makefile.am include/libvir.h src/Makefile.am src/hash.c
  src/hash.h src/internal.h src/libvir.c src/libvir_sym.version
  src/virsh.c: renamed to libvir
Daniel