better handling of db connections, return timestamp for found builds

webinstall/create_db.php

@@ -0,0 +1,28 @@
+<?php
+echo "CREATEDB\n";
+include("functions.php");
+$database=openDb();
+if (! isset($database)){
+    die("ERROR: db not set\n");
+}
+try{
+$sql="CREATE TABLE `CIBUILDS` (
+  `id` varchar(255) NOT NULL,
+  `tag` varchar(255),
+  `status` varchar(255) NOT NULL,
+  `config` longtext,
+  `environment` VARCHAR(255),
+  `buildflags` longtext,
+  `timestamp` timestamp ,
+  PRIMARY KEY  (`id`)
+);";
+
+echo "executing $sql<br>";
+$rt=$database->query($sql);
+echo "execute OK<br>";
+} catch (Exception $e){
+    echo "ERROR: ".$e;
+}
+
+
+?>