tool/check_patch.py: use temporary dir for temporary files

I personally dislike having my source tree being populated with
untracked files. This uses a temporary dir instead, telling the
user where he/she may find those files.

Signed-off-by: Cleber Rosa <crosa@redhat.com>
tools/run_pylint.py: prevent creation of empty pylintrc

I observed no change in behaviour whether the file exists or not.
Tested with latest upstream pylint.

Signed-off-by: Cleber Rosa <crosa@redhat.com>
tools/check_patch.py: try to keep column count <= 79

This is cosmetic only, but recomended by PEP8 and very much needed
for emacs users.

Signed-off-by: Cleber Rosa <crosa@redhat.com>
virt-libvirt: Virsh Bugfix for issue #57

Signed-off-by: Chris Evich <cevich@redhat.com>
qemu: Add a subtest nx.

Test whether nx(cpu) bit takes effect in guest.

Signed-off-by: Ken Cao <kcao@redhat.com>
Signed-off-by: Feng Yang <fyang@redhat.com>
KVM test: Rename the nx_exploit.py to nx.py
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Yolkfull Chow <yzhou@redhat.com>
qemu.tests.cfg: Add config file for nx.py script.

Signed-off-by: Feng Yang <fyang@redhat.com>
Signed-off-by: Cao, Chen <kcao@redhat.com>
KVM-TEST: use cfg to store the ", " on cpu flags
Signed-off-by: Xiaoqing Wei <xwei@redhat.com>