Patch to make require errors silent and removed evil workarounds.

Added new stdnse function stdnse.print_verbose (similar to print_debug).

scripts/oracle-enum-users.nse

@@ -34,15 +34,8 @@ categories = {"intrusive", "auth"}
 
 require 'shortport'
 require 'unpwdb'
-if pcall(require,"openssl") then
-  require("tns")
-else
-  portrule = function() return false end
-  action = function() end
-  stdnse.print_debug( 3, "Skipping %s script because OpenSSL is missing.",
-      SCRIPT_NAME)
-  return;
-end
+require 'openssl'
+require 'tns'
 
 portrule = shortport.port_or_service(1521, 'oracle-tns' )