Frédéric Delanoy : Paypal donations should use ' _donations' cmd value instead of '_xclick'.

[Jeremy Newman]

Module: website
Branch: master
Commit: 9253307ddbb7bf353a9cae0370cac7d71d541d05
URL:    http://source.winehq.org/git/website.git/?a=commit;h=9253307ddbb7bf353a9cae0370cac7d71d541d05

Author: Frédéric Delanoy <frederic.delanoy at gmail.com>
Date:   Fri Jul 23 18:18:32 2010 +0200

Paypal donations should use '_donations' cmd value instead of '_xclick'.

This allows in addition a better donation screen wording.
See "Technical HTML Variables" on "HTML Variables for Website Payments Standard" page
(https://cms.paypal.com/en/cgi-bin/?&cmd=_render-content&content_ID=developer/e_howto_html_Appx_websitestandard_htmlvariables#id08A6HF00TZS)