Initial directory structure.
Corrected issue #1: nonRepudiation certificates were not accepted
Improved signature form extension logic and tests
Added new error test case
Added support for verifying a signature on the date/time specified on the SignatureTimeStamp property, if present (preliminary version).
Improved documentation on EnvelopedXmlObject
Corrected bug on the acceptUnknownProperties method.
Added support to verify multiple time-stamp tokens in the same property instance.
Javadocs adjusments.
Javadocs adjustments
Corrected some file paths on the FileSystemKeyStoreKeyingDataProviderTest so that it works in different platforms.
Updated source files headers to match the new license (LGPL).