Mingw32 4.8 is kind of picky with macros and some complicated template stuff. Luckily there was another way to represent the SFINAE code that works on all platforms. Yay! Change-Id: Idc2e38f47bfdc57b394550bfa0f53cc0b825df25
Also moved some XML specific stuff into its own directory, and refactored ReferenceLinker a bit. Change-Id: I912247a82023c1bbf72dc191fbdaf62858cbec0c