Log Message:
Update to 0.5.9:

Noteworthy changes in version 0.5.9 (2006-08-06)
------------------------------------------------

* Fix cdk_kbnode_write_to_mem to return CDK_Too_Short when buf is
  NULL, tiny patch from Mario Lenz.

* Fixed opencdk-config script to include -lz, thanks to Weng Liong, Low.

* Fix prototypes for AIX compiler, reported by John Heiden.

* Don't use trailing comma in last enum constant, for IBM C v6.  Tiny
  patch from Albert Chin.