Continued implementation of extended attributes.

* Changed the `Issue` constructor to use an attribute map instead of an
  increasingly long parameter list. Of course we lose some control over required
  parameters.
* Added the Joda Time and SLF4J logging libraries.
* Implemented the `FileIssue` constructor for the new `Issue` refactor.

libpit/project.properties

@@ -1,10 +1,10 @@
-#Wed, 26 Oct 2011 14:20:47 -0500
+#Thu, 03 Nov 2011 13:47:05 -0500
 #Sat Apr 24 17:08:00 CDT 2010
 build.dir=build
 src.dir=src
 lib.shared.dir=../shared-libs
 test.dir=test
-build.number=0
+build.number=11
 expected.application.version=3.0.0
 lib.dir=lib
 release.dir=release