Support data collection in bolted binaries

Summary:
Similarly to how the compiler relies on DWARF to map samples, so
it is possible to collect profile data in binaries optimized by PGO
techniques and retrofit data to be used in a representation of the program
that was not optimized by PGO, this diff implements an option in BOLT to
encode a table in the output binary that allows us to map data collected
in optimized binaries back to the address space used in the input binary
(where the profile is useful, since we do not support running BOLT on a
binary already optimized by BOLT). The goal is to offer an option to
support BOLT in scenarios where it is not easy to run a special deployment of
the binary with a version that was not optimized by BOLT just for data
collection.

This feature is enabled with the -enable-bat flag. BAT stands for BOLT
Address Translation, which refers to the process of mapping output to
input addresses.

(cherry picked from FBD15531860)