SCons updates: (All done by jesterKing)

* Windows .exe file now includes the blender icon.
* Builds with game engine on Windows only.
  I tried building the game engine on Linux, but I get weird errors when
  building with ode. There's a dirty #include path in
  Physics/BlOde/OdePhysicsEnvironment.cpp (../ode/src/joint.h). gcc doesn't
  like this somehow.
* Other platforms need to add a couple of flags to the SConstruct:
  use_sumo, use_ode, solid_include and ode_include

source/gameengine/Ketsji/KXNetwork/SConscript

@@ -0,0 +1,29 @@
+kx_network_env = Environment()
+
+# Import the C flags set in the SConstruct file
+Import ('cflags')
+Import ('cxxflags')
+Import ('defines')
+Import ('python_include')
+kx_network_env.Append (CCFLAGS = cflags)
+kx_network_env.Append (CXXFLAGS = cxxflags)
+kx_network_env.Append (CPPDEFINES = defines)
+
+source_files = ['KX_NetworkEventManager.cpp',
+                'KX_NetworkMessageActuator.cpp',
+                'KX_NetworkMessageSensor.cpp',
+                'KX_NetworkObjectActuator.cpp',
+                'KX_NetworkObjectSensor.cpp'
+                ]
+
+kx_network_env.Append (CPPPATH = ['.',
+                                  '#source/kernel/gen_system',
+                                  '#intern/string',
+                                  python_include,
+                                  '#source/gameengine/Ketsji',
+                                  '#source/gameengine/GameLogic',
+                                  '#source/gameengine/Expressions',
+                                  '#source/gameengine/Network',
+                                 ])
+
+kx_network_env.Library (target='#/lib/KX_network', source=source_files)