Log Message:
Upgrade silc-client to version 1.1.7, fixing various crash and Perl problems.
ChangeLog for 1.1.5 somehow got lost, but here are the bits from 1.1.6 and
1.1.7:
 - Fixed channel MAC key setting in JOIN notify and command reply.
 - Fix reference count bug leading to memory corruption on duplicate deletions.
 - Avoid NULL dereference when leaving a channel with a private key.
 - Fix crash on expired keyboard prompts.
 - Add support for autosendcmd on channel entries.