This makes sense given that we already support app_id-prefixed apparg
parameters, and one might want to configure the JVM specially for different
apps from the same installation.
Note: unlike apparg, app_id-prefixed jvmargs are appended to un-prefixed
jvmargs rather than replacing them. I think this makes sense because you
probably want to specify standard JVM args and then maybe tweak a thing or two
for your other app. This is also backward compatible which is usually a good
thing. It does mean that it's harder to "undo" a jvmarg set for your "default"
app, in such cases you'd probably have to not have a default app and instead
identify all of your apps with app_ids.
Michael Bayne
256b048fce