Offer JVM HS functionality to shared lib load operations done by the JDK codebase

Currently there is a number of functionality that would be interesting to have for shared lib load operations in the JDK C code.
Some examples :
Events::log_dll_message for hs-err files reporting
JFR event NativeLibraryLoad
There is the need to update the shared lib Cache on AIX ( see LoadedLibraries::reload() , see also https://bugs.openjdk.org/browse/JDK-8314152 ),
this is currently not fully in sync with libs loaded form jdk c-libs and sometimes reports outdated information

Offer an interface (e.g. jvm.cpp) to support this.