23.7 Array fixed statement code style

A couple of things jumped out looking at the examples of the fixed statement around arrays:

``` csharp
for (int i = 0; i < a.Length; ++i)
```

The use of `++i` is quite unusual in my experience (in C#); there are rather more examples of `i++` in the standard. (There are a few other `++i` examples which should potentially be normalized at the same time.)

``` csharp
unsafe static void Fill(int* p, int count, int value) {
for (; count != 0; count--) *p++ = value;
}
```

Again this feels more like code that a C programmer might write; I would generally leave the parameter alone, and write this as

``` csharp
unsafe static void Fill(int* p, int count, int value) {
for (int i = 0; i < count; i++) *p++ = value;
}
```

(I'd really use braces of course, but I understand why we don't want to here.)

Do we want to try to change this sort of thing, or is it below the line?

(Perhaps we should create a task early in the C# 6 standardization process of "make all code samples consistent" and do it in one thorough pass.)