Add : The new constant VMG_COMPAT_HASH_DELETE_NOUVAR_VOID evaluates to true when "delete $hash{key}" does not call 'delete' uvar magic in void context.
Chg : The MAGIC tokens created by this module no longer use the mg_private member for storing a "magical" signature.
Fix : Triggering magic in a thread on a variable cloned from the main interpreter, and when the wizard already went out of scope, will not segfault anymore.
Opt : The pointer table is no longer needed to ensure thread safety. The size of the object code is about 8% smaller for threaded perls.
Tst : Threads tests will not fail anymore if resources constraints prevent the system from creating all the required threads.