+ added extra tests

+ remove class definitions for sticking around (by forcing eager metadata initialization)
+ improve cache size by eliminating the numbers of method metadata objects created
+ improve lookup access on method metadata

+ replace the vanilla hashmap with a quick-and-dirty, JDK based, fixed LRU cache

unresolvable placeholders will be ignored by default for Resource array properties as well (SPR-6654)

use TypeDescriptor.forObject instead of constructor; enforce use of TypeDescriptor.valueOf through making the constructor private

ObjectToObject converter now only matches public methods/constructors; private class method invocations also supported now through a makeAccessible call

introspect element type in case of incoming Collection/Map in order to not accidentally say canConvert=true (SPR-6564)

Added entity conveter null checking; updated from string converters to simply test str.length() as pre-processing check

moved generic converter to spi; added entity converter; removed various service impls in favor of service factory

moved generic converter to spi; added entity converter; removed various service impls in favor of service factory

http://jira.springframework.org/browse/SPR-6366

RESOLVED - issue SPR-6321: Regression: ResourceEditor in 3.0 does not ignore unresolvable placeholders, but it did in 2.5.6

AnnotationMetadata returns Class values by default (again), allowing for explicit retrieval of String class names where preferred (SPR-5827)