Removing legacy versions of Visual Studio 2010 and 2012
Merge branch 'master' of https://github.com/pioneerspacesim/pioneer into remove-vs2012

Conflicts:
	win32/vc2012/graphics/graphics.vcxproj
	win32/vc2012/graphics/graphics.vcxproj.filters
Merge pull request #2772 from fluffyfreak/remove-vs2012

DISCUSS - Removing Visual Studio 2010 and 2012
Updated COMPILING.txt to remove 2008, 2010 and 2012 references to Visual Studio products.
Also update the changelog
Merge pull request #2784 from fluffyfreak/update-compiling

Merging
Merge branch 'iteration_proxy'
Make static data tables in StarSystem const.
Make StarSystem attributes private.
Dump Sectors to stdout with 'pioneer -gd [radius]'
Basic GalaxyGenerator infrastructure
Move Sector generation code to SectorGenerators.
Basic StarSystem generation infrastructure in GalaxyGenerator.
Move StarSystem generation code to StarSystemGenerators.
StarSystem and the Generators are no more friends (but there is a betraying child of StarSystem).