Add Robert Harder's public domain Base64 encoding utility
Some transports require Base64 encoding of certain data fields, such
as the "encryption" used in HTTP basic authentication header fields.
The wise people at Sun have never included the incredibly widely used
Base64 encoding/decoding algorithms as part of the base JRE, forcing
everyone to include their own library. Fortunately for us Robert
Harder distributes one in the public domain.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>