+ Travis Brown <tebrown@csh.rit.edu>
+ Peter Stamfest <peter@stamfest.at> initial multi-thread support
+ David L. Barker <dave@ncomtech.com> xport function bug fixes
+ Mike Slifcak <slif@bellsouth.net> many rrdtool-1.1.x fixes
+ Peter Speck <speck@vitality.dk> eps/svg/pdf file format code in rrdtool-1.x
+