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BFont::Blocks is now implemented in ServerFont, via a call through the app_server. It uses fontconfig to iterate through a charset of a font and stores the defined blocks in a bitmap. A new API was added, BFont::IncludesBlock, that will allow for arbitrary testing of a given Unicode block. Since nothing is cached, searching through an entire charset for a series of Unicode blocks can be quite slow. In a given block there may be only 1 or 2 characters actually defined so every character within a block needs to be checked until one is found, which in a degenerate case will mean the entire block is checked. Signed-off-by: Axel Dörfler <axeld@pinc-software.de>