+ upgrade to JRuby 1.4.0

Renamed tests for AnnotationConfig[Web]ApplicationContext; added tests for scan() and register() methods.

EBR-551
+ seems I spoke too soon - JRuby is still not in the EBR

+ upgrade to JRuby 1.4.0

extended registerAfterCompletionWithExistingTransaction's exception handling to detect JBoss RollbackException as well (SPR-6450)

SPR-6529 - DateTimeFormatAnnotationFormatterFactory calls String.isEmpty(), which exists only in JDK1.6+

newTransactionStatus reverted to its original role, just without preparing synchronization (SPR-6521)

opened up RestTemplate method signatures to Map<String, ?> and Object array instead of enforcing String values

SPR-5327: tweak the ivy.xml so that commons-logging is a separate configuration.  It already comes out as optional in the generated poms (including core), which isn't great, but I can't see what is causing that

do not register default formatters for Date and Calendar (requiring explicit use of @DateTimeFormat there)