Updated ReferenceMap that in new commons-collection has been moved into a map package. Removed a check for null values because ReferenceMap could return null values for non-null keys (by default values are SOFT and keys are HARD).
Updated ReferenceMap that in new commons-collection has been moved into a map package.
Removed a check for null values because ReferenceMap could return null values for non-null keys (by default values are SOFT and keys are HARD).

git-svn-id: de9d04cf23151003780adc3e4ddb7078e3680318@466109 13f79535-47bb-0310-9956-ffa450edef68

chibenwa/james,chibenwa/james,aduprat/james,rouazana/james,rouazana/james,rouazana/james,aduprat/james,chibenwa/james,chibenwa/james,rouazana/james,aduprat/james,aduprat/james