[Libvir] removing trailing blanks (and keeping them away)

[Jim Meyering]

Any objection to a mass removal of trailing blanks?

[ If you haven't yet been adversely affected by e.g., pointless conflicts
  due solely to differences in white space, count yourself lucky, and
  chalk it up to not having to deal with many branches.
  The sooner we do this the better, IME. ]

I'm proposing two things:
  - remove all trailing blanks
  - add a "make syntax-check" check to ensure that no new ones are added

There aren't that many, but the change would affect many files.
IMHO, such a change should wait until after big patches like
Dan's StorageAPI changes are in.

Obviously, one would not change .png and .gif files,
and they would be exempted from the mechanical check.

Here's the full list:

tests/xmlrpctest.c:44
src/openvz_driver.c:41
src/openvz_conf.c:38
NEWS:33
src/libvirt.c:30
docs/virsh.pod:29
docs/libvir.html:24
virsh.1:21
src/xend_internal.c:19
docs/news.html:19
docs/index.py:19
docs/apibuild.py:18
src/xmlrpc.c:16
src/remote_internal.c:14
docs/devhelp/style.css:11
src/xen_internal.c:10
src/proxy_internal.c:9
src/xen_unified.c:8
proxy/libvirt_proxy.c:8
src/xs_internal.c:6
src/util.c:6
src/iptables.c:6
src/qemu_driver.c:5
src/qemu_conf.c:5
include/libvirt/libvirt.h:5
include/libvirt/libvirt.h.in:5
docs/library.xen:5
src/conf.c:4
python/generator.py:4
tests/virshtest.c:3
src/xml.c:3
src/xend_internal.h:3
src/openvz_conf.h:3
src/bridge.c:3
python/libvir.c:3
po/sv.po:3
libvirt.spec.in:3
docs/search.php:3
docs/libvirt.rng:3
docs/libvirLogo.png:3
docs/format.html:3
docs/examples/Makefile.am:3
docs/ChangeLog.xsl:3
docs/ChangeLog.awk:3
src/virterror.c:2
src/qemu.conf:2
src/driver.h:2
qemud/mdns.c:2
docs/site.xsl:2
docs/libvirHeader.png:2
docs/examples/suspend.c:2
docs/examples/python/README:2
docs/examples/examples.xsl:2
docs/Libxml2-Logo-90x34.gif:2
autogen.sh:2
TODO:2
tests/xml2sexprtest.c:1
tests/testutils.h:1
tests/test_conf.sh:1
tests/reconnect.c:1
src/xm_internal.c:1
src/virsh.c:1
src/sexpr.c:1
src/proxy_internal.h:1
src/openvz_driver.h:1
src/hash.c:1
src/buf.c:1
qemud/mdns.h:1
qemud/libvirtd.sasl:1
python/types.c:1
python/tests/uuid.py:1
python/tests/create.py:1
python/Makefile.am:1
po/ru.po:1
docs/windows.html:1
docs/windows-cygwin-3.png:1
docs/uri.html:1
docs/testnode.xml:1
docs/structures.fig:1
docs/node.fig:1
docs/news.xsl:1
docs/newapi.xsl:1
docs/libvirtLogo.png:1
docs/html/libvirt-libvirt.html:1
docs/examples/python/domstart.py:1
docs/examples/python/domsave.py:1
docs/examples/python/dominfo.py:1
docs/devhelp/Makefile.am:1
docs/architecture.fig:1
docs/Makefile.am:1
autobuild.sh:1