Performance optimization in av::fixup - use buffered IO, not mapped file

[Ryan Johnson]

On 13/12/2012 4:44 AM, Daniel Colascione wrote:
> On 12/13/12 1:09 AM, Corinna Vinschen wrote:
>> On Dec 12 13:20, Daniel Colascione wrote:
>>> (I also haven't checked whether anything in /bin actually ends up
>>> sparse. It'd be interesting to see.)
> I checked. Nothing in my /bin was sparse.
No doubt because setup.exe wouldn't have left the sparse flag on 
anything. Furthermore, my emacs binaries are the only ones with holes 
big enough for `cp' to detect.

So we basically lose nothing by preventing executable files from being 
marked as sparse...

Ryan