global: uint32_t:1 -> bool:1 They were uint32_t because I wanted to be sure that there wouldn't be any padding added to the struct. But this should be true also with bool:1.

auth: Added CACHE-FLUSH command to flush some/all users from auth cache.

auth_cache_negative_ttl is now also used for password mismatches. --HG-- branch : HEAD

Changed .h ifdef/defines to use <NAME>_H format. --HG-- branch : HEAD

Added auth_cache_negative_ttl setting. --HG-- branch : HEAD

If user is changed with "user=x" in extra_fields, cache the entry with the original username instead of with the changed username. --HG-- branch : HEAD

Add auth_cache_remove() function which will be used by OTP code to evict old entries from auth cache. Patch by Andrey Panin. --HG-- branch : HEAD

auth_cache: Try to handle changing passwords automatically: If password verification fails, but the last one had succeeded, don't use the cache. This works only with plaintext auth. --HG-- branch : HEAD

deinit, unref, destroy, close, free, etc. functions now take a pointer to their data pointer, and set it to NULL. This makes double-frees less likely to cause security holes. --HG-- branch : HEAD

Added "bool" type and changed all ints that were used as booleans to bool. --HG-- branch : HEAD

cache_key was set wrong for sql/ldap passdbs, so auth_cache was completely broken with them --HG-- branch : HEAD

Separated passdb_module's interface and the actual data struct. Now it's possible to have multiple passdbs of same type but with different settings. --HG-- branch : HEAD

Fallback to using expired records from auth cache if database lookups fail. --HG-- branch : HEAD

Added simple LRU cache for auth requests. Currently only for sql passdb. --HG-- branch : HEAD