Incorrect documenation for Alignof in http://golang.org/src/pkg/unsafe/unsafe.go

by **OmeiTurnbull**:

<pre>The comment for func AlignOf says:

// Alignof returns the alignment of the value v.  It is the minimum value m
such
// that the address of a variable with the type of v will always always be
zero mod m.

It s/b the maximum value, not the minimum.</pre>
