* fhandler_dsp.cc (ioctl): Use _ioctl for recursive call.
* spawn.cc (av::setup): Eat trailing whitespace on #! script.
Merge branch 'Cygwin' into develop
Revert "Revert mounting /usr to /"

This reverts commit d640adf6408389628bc5e93004c01e37b0fcd4d4.