Add a test that checks each individual script can be loaded in bare-mode.

Fixed most @load dependency issues in the process.  The test is still
failing in a "known" way due to hot.conn.bro and scan.bro.

Adressess #545

scripts/policy/protocols/http/detect-sqli.bro

@@ -1,5 +1,9 @@
 ##! SQL injection detection in HTTP.
 
+@load base/frameworks/notice/main
+@load base/frameworks/metrics/main
+@load base/protocols/http/main
+
 module HTTP;
 
 export {
@@ -54,4 +58,4 @@ event http_request(c: connection, method: string, original_URI: string,
 		Metrics::add_data(SQL_ATTACKS, [$host=c$id$orig_h]);
 		Metrics::add_data(SQL_ATTACKS_AGAINST, [$host=c$id$resp_h]);
 		}
-	}
+	}