Make sys_lseek return offset location (#1355)
Make sys_lseek return offset location (#1355)

Per the [man page](http://man7.org/linux/man-pages/man2/lseek.2.html#RETURN_VALUE), `lseek` should return the offset location as measured in bytes from the beginning of the file.
trailofbits/manticore,trailofbits/manticore,montyly/manticore,montyly/manticore,trailofbits/manticore