[PATCH 0/5] signal safe logging fixes

[Peter Hutterer]

1/5 is just rearranging, the interesting bits are 3 and 4 to add signed
printing to sigsafe logging.

5/5 changes the current behaviour to allow signal-unsafe logging again. This
is largely done because I won't be able to fix all drivers by 1.13 and given
that we had signal unsafe logging for years without too much fallout, we'll
probably be fine for those drivers.

Cheers,
  Peter