PARTIAL TAKE 971186

[xaiki@xxxxxxx (Niv Sardi)]

The forward declarations for the xfs_ioctl() helpers and
the associated comment about gcc behavior really aren't
needed; all of these functions are marked STATIC which
includes noinline, and the stack usage won't be a problem.

This effectively just removes the forward declarations and
moves xfs_ioctl() back to the end of the file.

Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxxx>
Signed-off-by: Niv Sardi <xaiki@xxxxxxx>