[11u] RFR: 8248348: Regression caused by the update to BCEL 6.0

[Lindenmaier, Goetz]

Hi,

I downport this for parity with 11.0.9-oracle.  Please review:
http://cr.openjdk.java.net/~goetz/wr20/8248348-BCEL_6_regression-jdk11/01/

I had to resolve the LastModified tags in the Javadoc comment.

https://bugs.openjdk.java.net/browse/JDK-8248348
https://hg.openjdk.java.net/jdk/jdk/rev/458fa7cc82b3

Best regards,
  Goetz.