libcmpiutil: add time and thread info in debug log
libcmpiutil: add time and thread info in debug log

  On server we need these information to debug eaiser.

v2:
  format adjusted.
v3:
  call time and thread function only when debug is enabled, which
improves performance when debug is shutdown.

Signed-off-by: Wenchao Xia <a82bded1b492a49d76e42d0788520e04e9fbf126@linux.vnet.ibm.com>

libvirt/libcmpiutil,libvirt/libcmpiutil,libvirt/libcmpiutil