Restore old log timestamp format.

Qt changed the meaning of the format we
were using for the timstamp. Switch back
to Qt:TextFormat which always is HH:MM:SS

Fixes #1332
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Update murmur.ini and scripts to disable dbus by default and enable ice.

Fixes #1083
Update URLs in installer and add a comment.
Add property to enable "Launch app at exit" by default.
Do not allow installing x86 and x64 side by side.

Previous setups used a different upgrade code for x64
installs meaning existing x86 installs wouldn't be replaced.
As we don't actually want to support having x64 and x86
versions installed alongside each other this patch makes
the x64 install use the same upgrade code as x86. Also it
makes the setup detect and upgrade x64 installs which used
the old upgrade code allowing smooth future updates for
existing users of these snapshots.
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Add PBKDF2 support to Murmur.
Review and refactor of PBKDF2 support patch.

* Adjusted to coding guidelines
* Pulled out PBKDF2 functionality into own class
* Make benchmark a best of N approach with guaranteed minimum
* Fixed broken database migration code. Don't try to alter
  tables and instead rely on them being re-created with the
  new fields.
* Fixed some typos in ini. Also move to the setting to the
  end so ppl. don't get the idea they have to change this.
* Chose a scarier name for the plain hash function
* Use int instead of size_t for iteration counts as it is
  the datatype used in the OpenSSL API. Otherwise we just
  have to much pain with constantly converting and might
  expose ourselves to size issues in the future.
* Moved new UserInfo enum entry to the end as to preserve
  the order