syscall: regenerate Flock_t to make it compliant with EABI
syscall: regenerate Flock_t to make it compliant with EABI

Note that current z-files for linux/amd64,386,arm are based on 3.2 kernel.

LGTM=iant
R=golang-codereviews, dave, bradfitz, gobot, iant
CC=golang-codereviews
https://codereview.appspot.com/59160044

apparentlymart/golang,apparentlymart/golang,apparentlymart/golang,apparentlymart/golang,apparentlymart/golang,apparentlymart/golang,apparentlymart/golang