Fixes for apache-harmony logging tests

Moves all config and resources files beneath com/android
to avoid conflicts with similar files held in libcore under
the same package and also originate from apache-harmony.
Updates to resource names in tests.

Additional changes described below.

FileHandlerTest: Refactoring to avoid getting the
java.io.tmpdir before it has been changed by the test
runner. Minor clean-up, plus...
testLimitAndCount: The test was assuming it could write
to the current directory. Prepended %t/ to paths to
write to the temp dir instead.
testInvalidParams(): The test was broken by Android
changes but does not appear to be testing anything
valuable.

LoggerTest: Import cleanup plus:
testGetLogger_Empty / testGetLoggerWithRes_Empty:
The tests appears incorrect. test_initHandler: Changed
to use resources rather than direct file access as
this will work better under CTS.

XmlFormatterTest: Use java.io.tempdir, not user.home
to create a temp file. This will work better under
Android.

Change-Id: Id62ea43d7a8ee276cf2f82916a3711028b36a349