Little tidy up and added checks for redefinitions.
Split fileutils out to its own pack.
Switched download location to github.
Doc fix in fileutils, and removed vim swap file from pack.
Creating a new package template.
FIXED: with_output_to_file/2 was creating file but writing to stdout.
FIXED: dot.pl was referring to local fileutils instead library;
ADDED: test.pl, updated release to 0.2.4
Rewrite of graph building for multi-module graphs.
Changed download location to explicit version.
Added multiple module graphing.
callgraph and fileutils now using predicate_options framework.
Added multi-module callgraph example.
FIX: Now handles assert/retract with variable argument.
Renamed clear to clear_all, added confirmation and added recompute_all.
Some minor modifications to confirmation handling.
New pack files.
Changed dcgu module name to avoid clash with my shared dcgu.