Log Message:
Update snownews to 1.5.12.
Based on PR#45167 by Benjamin Newman.

Version 1.5.12 released

 This version fixes the following things and probably even more things. It also
 adds OpenSSL as a requirement.
   * Corrected two crashes (oh the dreaded NULL-pointer) when using mark unread
     and open URL on non-existent items.
   * Use OpenSSL for MD5 calculations and remove all old MD5 code.
   * Fix 64bit digest calc. Readstatus wasn't remembered on 64bit versions.