autotest/virt-test — pull request #1296 by yangdongsheng (2013-12-26 08:35:30+00:00)
Title: virt-ppm_util: Just print a warning rather than fail if we have no PIL p...

It seems that python-imaging is not available in default of RHEL,
I think we can not assume that we can use it in ppm_util.

Signed-off-by: Dongsheng Yang