Fixed handling of blob data in Buffer.java

Fixed bug with authentication packet being sized too small.

The JDBC Driver is now under the LGPL

Fixed Buffer.readLenString() to correctly read data for BLOBS.

Fixed PreparedStatement.stringToStream to correctly read data for BLOBS.

Fixed PreparedStatement.setDate() to not add a day. (above fixes thanks to Vincent Partington)

Added URL parameter parsing (?user=... and so forth).