Add exception handle structure
Fix error occored when exited with video playing.
Update Lav Filters
Inprove filter selecting method.

Also fix memory leak while exting with packing methd non-empty.
Cache SpeShow Absolute Render Mode

Cache SpeShow Absolute Render Mode to improve performance. Simplify
SPTextureManager to imporve performance.
Improve TextBox Performance
Embedded V8 Scripting Engine into SPENGINE

But NOT SpeShow. SpeShow would support javascript in further commits.
Make Singleton Construction and Logging Thread Safe
Reorganize the Solution
Reconstruct SpeShow Component Composite Structure
Implement SV8TextBox and SV8DialogBox
Add Some V8 Functions
Embed Node.js as a Scripting Platform
Move SpeShow Event Handling to Node.js
Impletement a V8 Event Handling Structure

Impletement a V8 event handling Structure and remove KScript related
code from engine.
Fix a V8 Event Handling Bug
Add Basic V8 Command Queue to SpeShow
Impletement FPS and Cursor Object in SpeShow
Record Line and Column Number of a SpeShow Command
Add Serializer To SpeShowJS