Make ducttape usable in Eclipse again.

If not running within a jar,
and not running in a system-wide install,
use the parent dir of the bin directory.

Print this info out only when running in debug mode.

Remove duplicate title messages.

Print "(version unknown)" when version.info can't be read.
Work on adding namespace to tasks.
Merge branch 'master' of www:/repos/git/Workflow/ducttape

Conflicts:
	src/main/scala/ducttape/exec/PackageVersioner.scala