RFR: 8232161 Unexpected 1-way trip conversion entries on MS950 charset

[Ichiroh Takiguchi]

Hello.

Could you review the fix ?
Bug:    https://bugs.openjdk.java.net/browse/JDK-8232161
Change: https://cr.openjdk.java.net/~itakiguchi/8232161/webrev.00/

I have a concern about 1-way trip conversion entries (4 entries) on 
MS950 charset.
The detail information is in JDK-8232161 [1]

[1] https://bugs.openjdk.java.net/browse/JDK-8232161

Thanks,
Ichiroh Takiguchi
IBM Japan, Ltd.