TypeOracle.getParameterizedType would erroneously throw an IllegalArgumentException for a nested generic type if if its parameterized form was requested before the nested generic type was fully resolved.

Found by: ispeters
Review by: spoon

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@2119 8db76d5a-ed1c-0410-87a9-c151d255dfc7