Moved TextNode into osgText.

Cleaned up freetype plugin so it no longer does tesselation - instead Glyph and TextNode do this.

src/osgText/DefaultFont.cpp

@@ -194,7 +194,7 @@ void DefaultFont::constructGlyphs()
     // populate the glyph mp
     for(unsigned int i=32;i<127;i++)
     {
-        osg::ref_ptr<Glyph> glyph = new Glyph(i);
+        osg::ref_ptr<Glyph> glyph = new Glyph(this, i);
         
         unsigned int dataSize = sourceWidth*sourceHeight;
         unsigned char* data = new unsigned char[dataSize];