Anthony,

please revert this patch until Ram Pai provides a better version. It
causes too many problems. At least it

 - breaks -pflash somefile -snapshot
 - breaks mingw32 build due to redefined _open
 - uses PATH_MAX

rev3 does not fix any of the above.

At this chance: there is at least one indention issue remaining in
fill_token() which would be nice to fix while reworking the patch.

Jan