ReadOnly patch for 0.4.12 and 0.4.13

This is the ReadOnly patch recently sent by Ming Zhang ported
to 0.4.12 (and 0.4.13). I've also added information about IOMode
to /proc/net/iet/volume.

It was tested with Windows and Linux. Linux does not recognize the
device as write protected, this is a bug in the kernel and will be fixed
in the next version.

-- 
Damian Pietras

iscsitarget-0.4.12-ro.patch
Description: Text document