RFR: 8273801: Handle VMTYPE for "core" VM variant

[Aleksey Shipilev]

Building with --with-jvm-variants=core currently produces a binary that replies an odd version:


$ build/linux-x86_64-core-fastdebug/images/jdk/bin/java -version
openjdk version "18-internal" 2022-03-15
OpenJDK Runtime Environment (fastdebug build 18-internal+0-adhoc.shade.jdk)
OpenJDK 64-Bit  VM (fastdebug build 18-internal+0-adhoc.shade.jdk, interpreted mode)


It should actually say "OpenJDK 64-Bit Core VM", I think. Build just misses a simple definition of `VMTYPE` for core variant. 

After the patch:


$ build/linux-x86_64-core-fastdebug/images/jdk/bin/java -client -version
openjdk version "18-internal" 2022-03-15
OpenJDK Runtime Environment (fastdebug build 18-internal+0-adhoc.shade.jdk)
OpenJDK 64-Bit Core VM (fastdebug build 18-internal+0-adhoc.shade.jdk, interpreted mode)

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Commit messages:
 - Fix

Changes: https://git.openjdk.java.net/jdk/pull/5525/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5525&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8273801
  Stats: 4 lines in 1 file changed: 4 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5525.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5525/head:pull/5525

PR: https://git.openjdk.java.net/jdk/pull/5525