This commit replaces the old memory instrumentation with a new
implementation that scans carriers instead of wrapping
erts_alloc/erts_free. The old implementation could not extract
information without halting the emulator, had considerable runtime
overhead, and the memory maps it produced were noisy and lacked
critical information.

Since the new implementation walks through existing data structures
there's no longer a need to start the emulator with special flags to
get information about carrier utilization/fragmentation. Memory
fragmentation is also easier to diagnose as it's presented on a
per-carrier basis which eliminates the need to account for "holes"
between mmap segments.

To help track allocations, each allocation can now be tagged with
what it is and who allocated it at the cost of one extra word per
allocation. This is controlled on a per-allocator basis with the
+M<S>atags option, and is enabled by default for binary_alloc and
driver_alloc (which is also used by NIFs).

* maint:
  emacs: delimiter first in icr works
  emacs: Indent delimiter first in term elements correctly
  emacs: Indent tuple (and maps) elements as list elements
  Add emacs indention testcase

* dgud/tools/emacs/indent-tests:
  emacs: delimiter first in icr works
  emacs: Indent delimiter first in term elements correctly
  emacs: Indent tuple (and maps) elements as list elements
  Add emacs indention testcase

OTP-14944

Avoid

From:
{
^^element1,
^^element2
}

To:
{
^element1,
^element2
}

Split the manual testcase and run them in daily tests instead.
Easy to run directly as well:
(cd ../test; cerl -eval "emacs_SUITE:indent([])")