dbeusee enhancements

Changed usage to use names instead of ID's, and look up correct netsuite
domain (datacenter) to use (netsuite.com, na1.netsuite.com,
sandbox.netsuite.com, etc).  Old usage still supported for backward
compatibility, but new usage is recommended.  Use more fully qualified
namespaces so that things like ExpenseReport request can work.  Better
error handling so that users don't get "Use of uninitialized value..."
warnings.  Added options for debugging - send debug info to a file
(NetSuite.dbg by default) including SOAP request and reply and some
additional debug messages.  Allow add request to include attributes to
the <record> element (ExpenseReport record takes externalId element for
instance).