FileDB 클래스 추가

f_install/sql/err_log.sql

@@ -0,0 +1,12 @@
+BEGIN TRANSACTION;
+CREATE TABLE IF NOT EXISTS `err_log` (
+	`id`	INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+	`date`	TEXT NOT NULL,
+	`err`	TEXT NOT NULL,
+	`errstr`	TEXT NOT NULL,
+	`trace`	TEXT NOT NULL
+);
+CREATE INDEX IF NOT EXISTS `date` ON `err_log` (
+	`date`	DESC
+);
+COMMIT;