RFR 8054213: Class name repeated in output of Type.toString()

[Svetlana Nikandrova]

Hello,

could you please review this fix for toString() method of 
ParameterizedTypeImpl.
The problem is that when we obtain simple name of nested type shared 
prefix is only removed for ParameterizedType owner. We need to remove it 
for other cases too.

Please note that I also changed delimiter between outer and inner class 
from "." to "$". I believe as "$" is usually used to separate nested 
class name "." looks inconsistent and confusing.
Let me know if you have any objections.

Webrev:
http://cr.openjdk.java.net/~msolovie/8054213/webrev.00/ 
<http://cr.openjdk.java.net/%7Emsolovie/8054213/webrev.00/>
Issue:
https://bugs.openjdk.java.net/browse/JDK-8054213

Thank you,
Svetlana