Hey NikeJoshua,
I have no problem with source packages - I use them all the time. However, the SVN repo you linked to contains no makefile, which is necessary for compiling source packages. I would have to figure out the source code myself otherwise.
On the other hand, the SourceForge page has a makefile, but the makefile seems useless. It made the package, but then it has no rule for installing the package, and no instructions on how I should go about with the installation. Furthermore, my understanding is that Ming has two sides to it - the library, and the PHP extension. I think this package only handles the former.