Mac os custom font loading fix

Mac os user font from bundle loading fix
font load from path you don't even need to add it to plist file
second version of this patch https://github.com/cocos2d/cocos2d-x/pull/7578 - just truncate name internally as in iPhone to load font with path but you still need to add all fonts to .plist file
merge only one
Isn't this causing a compilation error?