They are there because it has compilation problem with Visual Studio 2008. Same for the VS2010 fix.
No, the r5026 and r5027 both are compilable by VS2010 but might have errors with VS2008.
The best choice is the latest official build, 0.98. Choosing an SVN build will always end up as 'trial and error' choice. Sometimes it good, sometimes the game you want didn't even goes into start menu.
Just like Metal Arms. I always play Metal Arms on official build, but for another game i use the latest revision.
Last question, and I'll be done with this thread.
I have an AMD Processor. I was wondering if there were any revisions that supported AMD CPU's moreso than Intel CPU's? Like, a noticeable difference when running the emulator.