[PATH] - add file:allocate/3

[Filipe David Manana]

Hello,

The following patch adds file:allocate/3, a wrapper for the POSIX
syscall posix_fadvise.

git fetch git fetch git://github.com/fdmanana/otp.git posix_fallocate

thanks

-- 
Filipe David Manana,
fdmanana@REDACTED, fdmanana@REDACTED

"Reasonable men adapt themselves to the world.
 Unreasonable men adapt the world to themselves.
 That's why all progress depends on unreasonable men."