Script context manager
Added ExecuteChecked method for ScriptContextHandle
Exported some of renderer interface to script
Merge pull request #65 from learn-more/master

Cleanup & refactor
Merge branch 'master' of https://github.com/yvt/openspades

Conflicts:
	Sources/AngelScript/addons/scriptbuilder.h
	Sources/Core/Math.cpp
	Sources/ScriptBindings/ScriptManager.cpp
	Sources/ScriptBindings/ScriptManager.h
Merge and some refactor (ref-counting some objects)
Renderer refactor
bugfix in netclient (was reserve instead of resize)
confirmation if you want to close the game
Merge branch 'master' of https://github.com/yvt/openspades
AudioDevice is exported to script
Fixed a bug in GLAmbientShadowRenderer that caused a small computation error and assertion failure
All of renderer functions are exported to script
Added faster primitive array type for scripting
Extended math scripting interface
* Negating vectors
* 4-component vector
* Transforming a vector by a matrix
Added Script API reference, and some missing exports.
typo
Merge branch 'master' of https://github.com/yvt/openspades
Tuned hurt effect
Disabled debug code
create ServerAddress, holder / generic functions for ip addresses