Git port of the fastwriter bzr repo from https://ufo.kit.edu/ufo

Suren A. Chilingaryan e99ffb4b0b Properly detect /dev/null as raw device and do not set DIRECT flag on raw devices %!s(int64=12) %!d(string=hai) anos
.bzrignore a77e7147c1 Initial release %!s(int64=12) %!d(string=hai) anos
CMakeLists.txt a77e7147c1 Initial release %!s(int64=12) %!d(string=hai) anos
config.h.in a77e7147c1 Initial release %!s(int64=12) %!d(string=hai) anos
default.c e99ffb4b0b Properly detect /dev/null as raw device and do not set DIRECT flag on raw devices %!s(int64=12) %!d(string=hai) anos
default.h 65a7473f12 Compile-in default api descriptor %!s(int64=12) %!d(string=hai) anos
fastwriter.c e99ffb4b0b Properly detect /dev/null as raw device and do not set DIRECT flag on raw devices %!s(int64=12) %!d(string=hai) anos
fastwriter.h 2474315881 Just push instead push_chunk %!s(int64=12) %!d(string=hai) anos
fastwriter.pc.in a77e7147c1 Initial release %!s(int64=12) %!d(string=hai) anos
private.h 9c14774f2b Few synchronization and alignment related fixes %!s(int64=12) %!d(string=hai) anos
sysinfo.c e99ffb4b0b Properly detect /dev/null as raw device and do not set DIRECT flag on raw devices %!s(int64=12) %!d(string=hai) anos
sysinfo.h e99ffb4b0b Properly detect /dev/null as raw device and do not set DIRECT flag on raw devices %!s(int64=12) %!d(string=hai) anos