Fixes #272. Defaults for @CacheNamespace do not match those of <cache>
Wrong change for #272. Default value for readWrite is true.
Fix for #116. Default implementation for a blocking cache and support
for EhCache's impl provided by Iwao
Fixes #273 An extra call to ResultHandler#handleResult is made for a nested result map.
Merge pull request #1 from mybatis/master

update to offical trunk