Review request for JDK-8074693: Different instances of same function use same allocator map

[Hannes Wallnoefer]

Please review JDK-8074693: Different instances of same function use same 
allocator map:

http://cr.openjdk.java.net/~hannesw/8074693/

This delays creation of allocator class name and property map until a 
function is actually invoked as constructor, but also makes sure each 
function instance gets its own allocator map (as it also has its own 
allocator prototype).

Thanks,
Hannes