inconsistent arena handling in area_linux
Linux areas receive an arena template from the user, and use it to create an internal arena pool, managed by
The current code reuse the provided template, instead of copying it, which is probably not what we want. The main
area_linux code also calls
jemalloc_destroy directly on the arena on
aml_area_destroy, which is obviously wrong, since we're destroying a pointer we haven't created, and also happening in the wrong place, as the manager should do that.