RFR:8060074:Cleanup of unused memory tracking parameters in os::free and its callers.

[Max Ockner]

Hello all,
Please review this minor cleanup:

Bug ID: 8060074
Webrev: http://cr.openjdk.java.net/~coleenp/8060074/

Summary:
(1) os::free takes two arguments, but never uses the second argument, 
which is a MEMFLAG. I have removed this argument from every os::free call.
(2) The FreeHeap method in src/share/vm/memory/allocation.inline.hpp 
also takes a MEMFLAG argument, which is only used to call os::free. Now 
an unused argument, it has been removed from all FreeHeap calls. No 
other methods which directly call os::free() have this problem.
(3) The FREE_C_HEAP_ARRAY macro in src/share/vm/memory/allocation.hpp 
takes A MEMFLAG argument which is passed to FreeHeap, and nothing else. 
This argument is now unused, and has been removed. No other methods 
which call FreeHeap have this problem.

No methods or macros which use the FREE_C_HEAP_ARRAY macro needed 
cleanup. I have also removed the extra argument from the definitions of 
the above methods.

Tests: jtreg hotspot tests with -vmoption:"-XX:NativeMemoryTrackingdetail"

Thanks for your help,
Max Ockner