First commit fixes the 'is_running()' method, which is not
working currently.

Second commit includes the qemu command line and its output when
there's an exception during the launch() and the VM is not started.

Last commit renames self._args to self.args. The leading underscore
represents that the variable is private and as such it should not be
accessed externally. But that variable is the main API for inclusion
of Qemu command arguments, so the rename makes it public.

Changes v1->v2:
 - Style fixes to make checkpatch.pl happy.
 - Rebased.
Changes v2->v3:
 - Fix typo in patch 3 ("qemu.py: make 'args' public") commit message.

Amador Pahim (3):
  qemu.py: fix is_running()
  qemu.py: include debug information on launch error
  qemu.py: make 'args' public

 scripts/qemu.py               | 33 ++++++++++++++++++++++++---------
 tests/qemu-iotests/iotests.py | 18 +++++++++---------
 2 files changed, 33 insertions(+), 18 deletions(-)

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2.13.3