General update (new tools)

Added tools for overlaying sicsi matrices to check PID, tools for checking the
normalised PID, updated chain handler and added the preliminary experimental
filter for indra_e503 (no VAMOS yet) Testing of this filter is delayed, I'm
having database problems.
Merge branch 'master' of https://github.com/pwigg/code-branch

Conflicts:
	analyse_ident/Makefile
	indra_sicsi/Makefile