Reduce size of jvmti-access library

In case the jar-size of the JVMTI-access library becomes an issue, we could evaluate reducing it by stripping the debug symbols from the binaries. According to [this comment](https://bugs.openjdk.org/browse/JDK-8022405?focusedId=14215454&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-14215454) the JVM builds on linux do the same.
* We would need to ensure that `hs_err_pid` JVM crash files still contain functions names for the stripped binaries
* We should ship the symbols in the `sources.jar` and ensure that they actually work (e.g. for analyzing core dumps)