Removed workaround for older MIPSpro compiler. The workaround was

preventing the proper functionality of the underlying iterator being
carried forward into the iterator adaptor.

Also added is_bidirectional enum to avoid EDG compiler error.


[SVN r9123]

libs/iterator

@@ -1 +1 @@
-Subproject commit fd6ba58d5eec71680e1ab9dfbd8af87a702ad09c
+Subproject commit ea4c7c7dd96fa2cb685cbbfe795874ee94de2d12