Improving 64 bit Linux support

[gaeorn]

I know that a relative few of us actually use EQEmu under 64 bit linux. However, I was thinking it would be great if we could integrate changes for 64 bit into the codebase without breaking anything for everyone else.

I'm not sure the best method to accomplish this so I'm requesting ideas. I have a number of changes that I have made to correct either compile time or runtime behavior of the server under 64 bit linux. Perhaps some of the changes would need minor tweaking to provide maximum compatibility.

I know the developers have a lot to do already, so I want to make this as easy as possible for them. However, I'm sure it would be greatly appreciated by those who do use 64 bit linux. And 64 bit systems will only grow in prevalence, so perhaps dealing with this now would be a good idea.

So, please reply with suggestions/ideas/flames/whatever. Thanks.