Fix crash when attempting to save chunks on windows.
Updated grass and dirt textures.  The now have light speckling and grass is darker than leaves.
Add GlassBlock.  Player starts with 10000, like DebugBlock.
Add Tex.getTextureIndex(int,int) to assist determining a Block's texture index.  Update existing blocks to use for clarity and for easier updating.
Fix Serialization of GlassBlock
Updates from the Code Analyzer; DebugBlock now has .1 health to prevent destroying multiple blocks at once
Merge pull request #13 from warriordog/master

Fix crash when saving level on Windows; New texture for dirt and grass; Add GlassBlock; Easier texture index use in code; Fix issues detected by IDE Code Analysis