Build type information on first use (load-time), instead of using a hardcoded list

--HG--
branch : dynamiccore2

src/modules/font/GlyphData.cpp

@@ -33,6 +33,8 @@ namespace love
 namespace font
 {
 
+love::Type GlyphData::type(&Data::type);
+
 GlyphData::GlyphData(uint32 glyph, GlyphMetrics glyphMetrics, GlyphData::Format f)
 	: glyph(glyph)
 	, metrics(glyphMetrics)