Fix compact of empty env (ITS#7956)
Fix mdb_rebalance collapsing root (ITS#8062)
Fix mdb_load with large values (ITS#8066)
+ Fix to retry writes on EINTR (ITS#8106)
+ Fix mdb_cursor_del on empty DB (ITS#8109)
+ Fix MDB_INTEGERDUP key compare (ITS#8117)
Added workaround for fdatasync bug in ext3fs
Build
Don't use -fPIC for static lib