Base64/QP perl module

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+This package contains a base64 encoder/decoder and a quoted-printable
+encoder/decoder.  These encoding methods are specified in RFC 2045 -
+MIME (Multipurpose Internet Mail Extensions).
+
+The base64 encoding is designed to represent arbitrary sequences of
+octets in a form that need not be humanly readable. A 65-character
+subset ([A-Za-z0-9+/=]) of US-ASCII is used, enabling 6 bits to be
+represented per printable character.
+
+The quoted-printable encoding is intended to represent data that
+largely consists of bytes that correspond to printable characters in
+the ASCII character set.  Non-printable characters are represented by
+a triplet consisting of the character "=" followed by two hexadecimal
+digits.
+
+The MIME::Base64 and MIME::QuotedPrint modules used to be part of
+libwww-perl package.  They are now distributed separately (this
+package).  The main improvement is that the base64 encoder/decoder is
+implemented by XS functions.  This makes it about 20 times faster than
+the old implementation in perl.