Added descriptive text about copyright of the manual.

@item

Older versions of MySQL (3.22 and earlier) are subject to a more

@uref{http://www.mysql.com/support/arrangements/mypl.html, strict license}.

strict license

(@uref{http://www.mysql.com/support/arrangements/mypl.html}).

See the documentation of the specific version for information.

@item

The manual is not distributed under a GPL/LGPL license, it is

copyrighted material by MySQL AB. It is distributed electronically

as part of the MySQL distribution, and may be freely read.

Conversion to other formats is allowed, but the actual content

may not be altered or edited in any way.

You may also create a printed copy for your own personal use.

For all other uses, such as selling printed copies or using

(parts of) the manual in another publication, prior written

agreement from MySQL AB is required.

Please e-mail @email{docs@@mysql.com} for more information or

if you are interested in doing a translation.

@end enumerate

For information about how the MySQL licenses work in practice,