* kernel commit 0bf2d83 fixes the problem with struct taskstats,
now iotop 1.30 handles only v15 of the struct in a different way,
retaining compatibility with both old and new kernels
* show zero current values for exited processes
* flush stdout after each batch run
OBS-URL: https://build.opensuse.org/package/show/Base:System/iotop-c?expand=0&rev=20
