Add UserFunctionCache to cache UDF's library (#453)

* Add UserFunctionCache to cache UDF's library

This patch replace LibCache with UserFunctionCache. LibCache use HDFS
URL to identify a UDF's Library, and when BE process restart all of
downloaded library should be loaded another time. We use function id
corresponding to a library, and when process restart, all downloaded
libraries can be loaded without another downloading.

* update

be/src/runtime/runtime_state.cpp

@@ -46,6 +46,30 @@
 
 namespace doris {
 
+RuntimeState::RuntimeState(
+        const TUniqueId& fragment_instance_id,
+        const TQueryOptions& query_options,
+        const std::string& now, ExecEnv* exec_env) :
+            _obj_pool(new ObjectPool()),
+            _data_stream_recvrs_pool(new ObjectPool()),
+            _unreported_error_idx(0),
+            _profile(_obj_pool.get(), "Fragment " + print_id(fragment_instance_id)),
+            _fragment_mem_tracker(NULL),
+            _is_cancelled(false),
+            _per_fragment_instance_idx(0),
+            _root_node_id(-1),
+            _num_rows_load_success(0),
+            _num_rows_load_filtered(0),
+            _num_print_error_rows(0),
+            _normal_row_number(0),
+            _error_row_number(0),
+            _error_log_file(nullptr),
+            _is_running(true),
+            _instance_buffer_reservation(new ReservationTracker) {
+    Status status = init(fragment_instance_id, query_options, now, exec_env);
+    DCHECK(status.ok());
+}
+
 RuntimeState::RuntimeState(
         const TExecPlanFragmentParams& fragment_params,
         const TQueryOptions& query_options,