ObjectScript Code

implement string support for python style % operator for string formatting

opps, I shouldn't remove a method called from dynamically generated code..

hmm, looks like I broke COM support (see #890) because now the length of `parameterTypes` matters.. I think this should fix it (and clean things up a bit), but need to commit to move the changes over to my windows PC for more testing..

add support for java5 var-arg methods (see #887). Also, fix a test case that was failing (simply a case of a test case that needed to be updated when `OFunction#castToString()` was updated to show function argument names)

script class-loader should have access to all scripts, because it may need to load plugins on behalf of client plugins.. This makes `OscriptPlugin#registerClient()` only needed in cases where the client plugin has .os script files or other resources (besides java classes) that could need to be accessed from the script environment.

remove unneeded class

an optimization to avoid security check in Field#get()

try to handle pedantic cases a little better

handle case were exception msg is `null`

remove debug printout