Share method trampolines in CDS dynamic archive

Currently, apps using CDS dynamic archive (-XX:ArchiveClassesAtExit) have slower start-up time than the same apps using CDS static archive (-Xshare:dump). One reason is that DynamicArchiveBuilder::make_trampolines() allocates a separate trampoline for each Method:

https://github.com/iklam/jdk/blob/cfd41c0c1dfae823d465711d147373c343977f00/src/hotspot/share/memory/dynamicArchive.cpp#L353

At run time, whenever an archived Method is linked, we need to compile a trampoline call using SharedRuntime::generate_trampoline(). This is a slow operation.

https://github.com/iklam/jdk/blob/cfd41c0c1dfae823d465711d147373c343977f00/src/hotspot/share/runtime/sharedRuntime.cpp#L2612

In contrast, in the static archive, archived Methods with the same AdapterHandlerEntry share the same trampoline. At run time, fewer calls to SharedRuntime::generate_trampoline() are made.