Renamed Font:hasGlyph to Font:hasGlyphs, and expanded it to accept multiple arguments and full strings. Resolves issue #762.

src/modules/graphics/opengl/wrap_Font.h

@@ -43,7 +43,7 @@ int w_Font_getFilter(lua_State *L);
 int w_Font_getAscent(lua_State *L);
 int w_Font_getDescent(lua_State *L);
 int w_Font_getBaseline(lua_State *L);
-int w_Font_hasGlyph(lua_State *L);
+int w_Font_hasGlyphs(lua_State *L);
 extern "C" int luaopen_font(lua_State *L);
 
 } // opengl