If __LP64__ is defined then the type "long" is 64-bits, and there is
no need to explicitly request _FILE_OFFSET_BITS == 64.  This changes
the definitions of F_GETLK, F_SETLK, and F_SETLKW on PPC to the values
that the kernel requires.  The values used in C when _FILE_OFFSET_BITS
== 64 are corrected by the glibc fcntl function before making the
system call.

With this change, regenerate ppc64le files on Ubuntu trusty.

Change-Id: I8dddbd8a6bae877efff818f5c5dd06291ade3238
Reviewed-on: https://go-review.googlesource.com/9962Reviewed-by: Minux Ma <minux@golang.org>