Hotspot and OpenJ9 tarballs extract to the same directory

[fraik]

Platform:
MacOS

Architecture:
x64

Both HotSpot and OpenJ9 tarballs untar into the same directory. If the destination directory contains the name of the JVM (i.e. hotspot or openj9) updating or switching between JVMs would (imho) be more straightforward and possibly less confusing out of the box.

Steps to reproduce

1. visit https://adoptopenjdk.net/
2. select "Other platform"
3. select "OpenJDK 8 (LTS)"
4. select "HotSpot"
5. select "macOS x64"
6. select "Download JDK (tar.gz)"
7. select "Back to platform"
8. select "OpenJ9"
9. select "MacOS x64 Large Heap"
10. select "Download JDK (tar.gz)"
11. untar both HotSpot and OpenJ9 tarballs
12. notice HotSpot JVM has been overwritten by the OpenJ9 JVM

# untar (hotspot)
[user@box TestZone]$ tar xf ~/Downloads/OpenJDK8U-jdk_x64_mac_hotspot_8u212b03.tar.gz

# check JVM (hotspot)
[user@box TestZone]$ jdk8u212-b03/Contents/Home/bin/java -version
openjdk version "1.8.0_212"
OpenJDK Runtime Environment (AdoptOpenJDK)(build 1.8.0_212-b03)
OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.212-b03, mixed mode)

# untar (openj9)
[user@box TestZone]$ tar xf ~/Downloads/OpenJDK8U-jdk_x64_mac_openj9_macosXL_8u212b03_openj9-0.14.0.tar.gz

# check JVM (now overwritten by openj9)
[user@box TestZone]$ jdk8u212-b03/Contents/Home/bin/java -version
openjdk version "1.8.0_212"
OpenJDK Runtime Environment (build 1.8.0_212-b03)
Eclipse OpenJ9 VM (build openj9-0.14.0, JRE 1.8.0 Mac OS X amd64-64-Bit 20190417_48 (JIT enabled, AOT enabled)
OpenJ9   - bad1d4d06
OMR      - 4a4278e6
JCL      - 5590c4f818 based on jdk8u212-b03)

Of course the destination directory can be moved to a different name but (imho) it would be better if the JVM-name is included by default.

Kind regards,
Freek

[karianna]

related to #1016