Log Message:
Update to 2.28.2:

Changes in version 2.28.2 are:
 * Add license to reference documentation.
 * Sent output of g_printerr to syslog.
 * No error when can't unlock login keyring.
 * Fix assertion when comparing attributes.
 * Fix freeing of unallocated memory in test.
 * Don't barf on certificates with unsupported algorithm.
 * Fix some memory leaks.