Make CSimContext accessible to all component code, so they don't all have to save their own copies of it. This was SVN commit r7490.
Added rough pathfinder test system. MapReader: support loading maps into a minimal non-graphical environment (for tests). This was SVN commit r7317.
Giant merge from http://svn.wildfiregames.com/hg-source/file/5fb522019d5e Infrastructure is largely complete, gameplay is largely missing Disabled by default; use command-line flag "-sim2" (Second attempt at commit...) This was SVN commit r7259.