aft: Revamp with some useful options.
aft: Revamp with some useful options.

The new options include --no-alloc-limit (for determining how many allocs that
a file needs to run), --show-symtab (for showing symtab via aft), and
--show-alloc-info (for showing verbose info in aft).

These changes make aft more useful, mainly by reducing spam when it's not
wanted.

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