Polishing

Issue: SPR-11262
(cherry picked from commit d628025)
ResourceHttpRequestHandler explicitly closes a Resource's InputStream

Issue: SPR-11644
(cherry picked from commit 3a96f16)
Revised ByteArrayOutputStream handling in MarshallingView and co

Issue: SPR-11646
(cherry picked from commit 8006696)
Commons Logging resolution failure with JasperReports 2.0.5 -> easiest way out: upgrade to JasperReports 3.7.6 (which in turn requires POI 3.6)