The ww:sort, ww:generator and ww:subset tags are broken. Fixed these.

Changelog:

Modified:
* src/etc/taglib.tld (I just set the rtexprvalue of the three tags attributes to 'true')
* src/java/com/opensymphony/webwork/views/jsp/iterator/SortIteratorTag.java
* src/java/com/opensymphony/webwork/views/jsp/iterator/SubsetIteratorTag.java
* src/java/com/opensymphony/webwork/views/jsp/iterator/IteratorGeneratorTag.java

Added:
* src/java/com/opensymphony/webwork/views/jsp/iterator/IterableBean.java
* src/java/com/opensymphony/webwork/views/jsp/iterator/SortBean.java
* src/java/com/opensymphony/webwork/views/jsp/iterator/GeneratorBean.java
* src/java/com/opensymphony/webwork/views/jsp/iterator/SubsetBean.java
* src/java/com/opensymphony/webwork/views/jsp/iterator/IterableTagSupport.java

Not needed anymore ( not 100% sure :) maybe somewhere are these classes used ):
* src/java/com/opensymphony/webwork/util/IteratorGenerator
* src/java/com/opensymphony/webwork/util/SortIteratorFilter
* src/java/com/opensymphony/webwork/util/SubsetIteratorFilter


Forum post:
http://forums.opensymphony.com/thread.jspa?threadID=9987