[8u40] Backport RFR: 8007993: hotspot.log w/ enabled LogCompilation can be an invalid XML

[Tobias Hartmann]

Hi,

please review the following backport request for 8u40.

8007993: hotspot.log w/ enabled LogCompilation can be an invalid XML
https://bugs.openjdk.java.net/browse/JDK-8007993
http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/c13eb14ebf5c
http://cr.openjdk.java.net/~thartmann/8007993/webrev.00/

The changes were pushed to 9 on Wednesday and nightly testing showed no
problems. The patch cleanly applies to 8u40.

Thanks,
Tobias