Added fix for issue#98 with test case.
Added fix for issue#97 which uses ConcurrentSkipListMap as the base
collection backing SortedCollection and SortedMap.
Included jsr166x for ability to use the previously mentioned classes in
a 1.5jdk
Removed jsr166x dependency, since it was compiled for jsk 1.6; included
ConcurrentSkipListMap (and necessary dependent classes from jsr166x)
instead into orika core module.
Included fix for issue#82 with test case.