Duplicate recent tasks=fifo hierarchical locale changes for tasks=none.
Duplicate recent tasks=fifo hierarchical locale changes for tasks=none.

[Reviewed by Tom.]

This adjusts "none" tasking for locale-aware memory allocation in the
same way that r21331 and r21345 did so for fifo tasking.  The specific
file changes are as follows:

runtime/src/tasks/none/tasks-none.c
  - In the task pool descriptor, replace the serial state, here pointer,
    and localeID members with an instance of chpl_task_private_data_t,
    which contains the same info and more.
  - Replace the static data objects that contain the serial state, here
    pointer, and localeID of the current task with an instance of
    chpl_task_private_data_t.  Initialize this with the appropriate
    values for startup, that is, the period between the chpl_task_init()
    call and the chpl_task_callMain() call.
  - Remove setting the serial state to false in chpl_task_init().  This
    is no longer needed, due to the static initialization described in
    the bullet immediately above.
  - Remove marker "TODO" comment left by Tom in chpl_task_callMain().
    The work is done.
  - Throughout the code, replace chpl_get_getSerial() calls with
    references to the actual current serial state.  (This just to make
    the code look the same everywhere, since in some places we did it
    one way and in others we did it the other way.)
  - Add an implementation of chpl_task_getPrivateData().
  - Tidy up comments and formatting associated with the serial state,
    here pointer, and localeID here and there.


git-svn-id: 5aabc979e906cfa1cd4a03d781c193b99fe6e46f@21387 3a8e244f-b0f2-452b-bcba-4c88e055c3ca

sungeunchoi/chapel,chizarlicious/chapel,chizarlicious/chapel,chizarlicious/chapel,hildeth/chapel,hildeth/chapel,CoryMcCartan/chapel,sungeunchoi/chapel,CoryMcCartan/chapel,hildeth/chapel,CoryMcCartan/chapel,hildeth/chapel,sungeunchoi/chapel,CoryMcCartan/chapel,hildeth/chapel,sungeunchoi/chapel,chizarlicious/chapel,sungeunchoi/chapel,CoryMcCartan/chapel,chizarlicious/chapel,CoryMcCartan/chapel,sungeunchoi/chapel,sungeunchoi/chapel,chizarlicious/chapel,CoryMcCartan/chapel,hildeth/chapel,sungeunchoi/chapel,hildeth/chapel,chizarlicious/chapel