fix array breaking __radd__ fallbacks
fixes #1622

Fixes SyspathJavaLoader so that packages added to sys.path work with
Java's standard resource loading (getResource, getResourceAsStream)
methods. Resolves #1373.

Thanks Justin Deoliveira and Costantino Cerbo for contributing this patch.

Added specific support of threading.Thread.__tojava__, which enables
the underlying Java thread to be accessed. Also restored concurrency
of the canonical maps by switching to Google Guava to support them
with MapMaker. Fixes #1630.

website updates for 2.5.2b1

prepare for 2.5.2b1

Fixed #1522 by weakening references in class_to_type map (both key and
value). However, in certain cases our code expects that these refs are
in fact hard, so make all exposed types hard and also by default
PyType#fromClass will add a hard ref. In contrast, types imported in
that proxy Java classes should now be weak.

Added Guava R05 (which includes google collections), to support the
desired map. We may wish to strip this down, however, it could be
useful in the future too.

Fix for bug 1614: minidom chunks the character input on multi-line values

accept directories containing + signs,
both during installation and at runtime in standalone mode

Reflected method fixes:

Fixes #1605 by having PyComplex#__tojava__ refuse to convert to
anything but itself (restores old behavior before adding support for
faux floats)

Fixes #1615 by supporting varargs Java methods, so that a method
marked as test(String...) can be called as either test("abc", "xyz")
or, because it's reasonable in Java, test(["abc", "xyz"])

require subprocess again