[11u]: 8262121: [11u] Redo 8244287: JFR: Methods samples have line number 0

[Lindenmaier, Goetz]

Hi,

We tried to backport "8244287: JFR: Methods samples have line number 0"
to 11.0.9 [1].  The first downport had to be backed out, though [2].

I now propose this change for the issue. Please review.
http://cr.openjdk.java.net/~goetz/wr21/8262121-Redo-8244287-JFR_line_no_0-jdk11/01/
I have verified that we do not see the crashes we saw with the
original change.

New Issue:
https://bugs.openjdk.java.net/browse/JDK-8262121

Original Change: 
https://bugs.openjdk.java.net/browse/JDK-8244287
Previous downport:
 https://bugs.openjdk.java.net/browse/JDK-8253576
Backout:
https://bugs.openjdk.java.net/browse/JDK-8253813

I don't understand why the previous backport is
flagged as 11.010. It was pushed on 2020-09-23,
which was in the 11.0.9 time frame. But we had 
issues with the automatic tagging in the past, probably
this is the reason.

I will only push this to 11.0.12.
I would also adapt the backport information so that
JBS shows that this is only fixed in 11.0.12.

Best regards,
  Goetz

[1] https://mail.openjdk.java.net/pipermail/jdk-updates-dev/2020-June/003312.html
[2] http://mail.openjdk.java.net/pipermail/jdk-updates-dev/2020-September/003886.html