Adds a constant for the root username which can be overriden in LocalConfig.php, a=chris

diff --git a/src/configs/Config.php b/src/configs/Config.php
index 22da2c892..a92f2eb2f 100755
--- a/src/configs/Config.php
+++ b/src/configs/Config.php
@@ -425,6 +425,10 @@ if (isset($_SERVER['HTTP_USER_AGENT'])) {
  */
 /** ID of the root user */
 nsdefine('ROOT_ID', 1);
+/**User name of the root user. If you want to change this, change
+ the value in LocalConfig.php, then run the Createdb.php script. You
+ should do this before you have much data in your system. */
+nsconddefine('ROOT_USERNAME', "root");
 /** Role of the root user */
 nsdefine('ADMIN_ROLE', 1);
 /** Default role of an active user */
diff --git a/src/configs/Createdb.php b/src/configs/Createdb.php
index 5efdf71d0..186aa1076 100755
--- a/src/configs/Createdb.php
+++ b/src/configs/Createdb.php
@@ -64,13 +64,13 @@ if (!in_array(DBMS, ['sqlite', 'sqlite3'])) {
     foreach ($database_tables as $table) {
         $db->execute("DROP TABLE ".$table);
     }
-    $db->execute("DROP DATABASE IF EXISTS ".DB_NAME);
-    $db->execute("CREATE DATABASE ".DB_NAME);
+    $db->execute("DROP DATABASE IF EXISTS " . DB_NAME);
+    $db->execute("CREATE DATABASE " . DB_NAME);
     $db->disconnect();

     $db->connect(); // default connection goes to actual DB
 } else {
-    @unlink(CRAWL_DIR."/data/".DB_NAME.".db");
+    @unlink(CRAWL_DIR."/data/" . DB_NAME . ".db");
     $db = new $db_class();
     $db->connect();
 }
@@ -78,7 +78,7 @@ if (!$profile_model->createDatabaseTables($db, $dbinfo)) {
     echo "\n\nCouldn't create database tables!!!\n\n";
     exit();
 }
-$db->execute("INSERT INTO VERSION VALUES (".YIOOP_VERSION.")");
+$db->execute("INSERT INTO VERSION VALUES (" . YIOOP_VERSION . ")");
 $creation_time = L\microTimestamp();
 //numerical value of the blank password
 $profile = $profile_model->getProfile(WORK_DIRECTORY);
@@ -91,9 +91,10 @@ $temp = bcpow($sha1_of_blank_string . '', '2');
 $zkp_password = ($new_profile['FIAT_SHAMIR_MODULUS']) ?
     bcmod($temp, $new_profile['FIAT_SHAMIR_MODULUS']) : "";
 //default account is root without a password
-$sql ="INSERT INTO USERS VALUES (".ROOT_ID.", 'admin', 'admin','root',
+$sql ="INSERT INTO USERS VALUES (" . ROOT_ID . ", 'admin', 'admin','" .
+        ROOT_USERNAME . "',
         'root@dev.null', '".L\crawlCrypt('')."', '".ACTIVE_STATUS.
-        "', '".L\crawlCrypt('root'.AUTH_KEY.$creation_time).
+        "', '".L\crawlCrypt(ROOT_USERNAME . AUTH_KEY . $creation_time).
         "', 0,'$creation_time', 0, 0, '$zkp_password')";
 $db->execute($sql);
 /* public account is an inactive account for used for public permissions