[ft] sub pixel positioning when Auto hinter and cache are used

[Maggy Anastasia]

Hi All

I would like to consult with you regarding cache subsystem. Some of the parameters input for FTC_Manager_New(), in particular max_cache_bytes, has no effect on my system.

I tried setting different values of max_cache_bytes (from default, 5000, 10000, 100000) it seems to me that the cache just grows without any replacement. 

I have called FTC_Manager_New(), FTC_ImageCache_New() to initialize the cache. The cache works properly other than it just continue growing. Did I miss anything in my initialization steps to make max_cache_bytes parameter works.

Another problem  is related with FTC_Manager_RemoveFaceID(). When I called this function to delete a specific font face by passing the corresponding FTC_FaceID object, the cache manager deleted ALL the face nodes instead of the specific node corresponding to the intended font face. 

I'm currently using Freetype 2.3.7. I am looking forward to your advice and help. Many thanks in advance

regards

Maggy Anastasia Suryanto