filter: Upgraded log handles, removed boost

The filter has been upgraded to the newer version of the log handling class with
protected default constructors to prevent a null handler being passed to the log
function.

BOOST dependencies have been removed. Memory status unchecked for the moment as
I need a working config file to proceed and I can't seem to locate the SIMON
code on this machine.

Log messages should be avoided in destructors as the status of the handling
pointer address is unknown. Valgrind reports invalid reads/writes if you do
this and so all such messages have been removed.
filter: Added 'deleted' file changes
Merge branch 'unstable'

Merged the changes made to 'filter' back into the master branch. The filter
program didn't work before anyway so any changes made here on out may as well
take place in the master branch.
Merge branch 'master' of https://github.com/pwigg/repository

Pre-push merge with master branch