A working win32 build environment

While all development of Ember occurs on Linux, we do provide support for win32 also. However, there's currently no good guide for setting everything up for compilation on win32. One reason for this is that we use a lof of autotools configuration, which requires mingw and msys in order to build. While there has been a couple of attempts at this, none has yet delivered. For 0.5.3 I did a setup on win32 myself, and got it to produce a working build. However, a lot of the libraries has since changed, and the setup I used used a lot of hacks and wasn't documented.

Therefore both a good guide on how to setup everything, as well as precompiled binaries of the most common used libraries would be needed. It would be even better if a complete environment could be supplied as an archive.