[8u] Request for enhancement backport approval for 8059038: Create new launcher for SA tools

[Severin Gehwolf]

Hi,

Please approve this enhancement backport request which adds launchers
for CLHSDB and HSDB (part of the sa-jdi.jar) currently not present in
JDK 8u. JDK 9+ has 'jshsdb clhsdb' (CLI) and 'jhsdb hsdb' (GUI) for the
serviceability agent. This patch would make those available in JDK 8u
too.

The risk of making them available is none. It's not possible to use
them this way right now. The commands don't exist. Except for a new
launcher no new code has been added. The launcher delegates to existing
CLHSDB and HSDB classes.

Testing: New basic test, manual testing that launchers work.

webrev: http://cr.openjdk.java.net/~sgehwolf/webrevs/JDK-8059038/01/
Bug: https://bugs.openjdk.java.net/browse/JDK-8059038

Thoughts?

Thanks,
Severin