Reorganizing into subprojects.

libpit      - Personal Issue Tracker core libraries (Filter, Issue, Project, Category)
pit-cli     - Command Line Interface (CLI) to libpit
pit-swing   - Graphical, Swing interface to libpit (built using Griffon)

libpit and pit-swing both build, though pit-swing is just an empty griffon poject.

libpit/project.properties

@@ -0,0 +1,5 @@
+app.version=1.0
+build.dir=build
+build.jar=pit-${app.version}.jar
+lib.dir=../lib
+src.dir=src