Move map optimizations from beam_peep to beam_block
Move map optimizations from beam_peep to beam_block

As a preparation for removing the beam_peep pass, move the remaining
useful optimizations to beam_block.

dgud/otp,isvilen/otp,erlang/otp,isvilen/otp,isvilen/otp,g-andrade/otp,vinoski/otp,rlipscombe/otp,erlang/otp,bjorng/otp,jj1bdx/otp,dgud/otp,emacsmirror/erlang,rlipscombe/otp,jj1bdx/otp,mikpe/otp,isvilen/otp,potatosalad/otp,potatosalad/otp,vinoski/otp,getong/otp,erlang/otp,emacsmirror/erlang,emacsmirror/erlang,isvilen/otp,emacsmirror/erlang,emacsmirror/erlang,mikpe/otp,potatosalad/otp,g-andrade/otp,bjorng/otp,dumbbell/otp,rlipscombe/otp,potatosalad/otp,getong/otp,bjorng/otp,getong/otp,jj1bdx/otp,dumbbell/otp,g-andrade/otp,g-andrade/otp,erlang/otp,vinoski/otp,getong/otp,vinoski/otp,dumbbell/otp,bjorng/otp,emacsmirror/erlang,jj1bdx/otp,jj1bdx/otp,rlipscombe/otp,g-andrade/otp,bjorng/otp,erlang/otp,potatosalad/otp,bjorng/otp,dumbbell/otp,isvilen/otp,dgud/otp,dgud/otp,vinoski/otp,g-andrade/otp,potatosalad/otp,rlipscombe/otp,dgud/otp,jj1bdx/otp,emacsmirror/erlang,vinoski/otp,vinoski/otp,g-andrade/otp,mikpe/otp,isvilen/otp,mikpe/otp,isvilen/otp,getong/otp,isvilen/otp,g-andrade/otp,mikpe/otp,bjorng/otp,rlipscombe/otp,rlipscombe/otp,emacsmirror/erlang,mikpe/otp,erlang/otp,dumbbell/otp,isvilen/otp,emacsmirror/erlang,dumbbell/otp,getong/otp,potatosalad/otp,erlang/otp,bjorng/otp,jj1bdx/otp,getong/otp,potatosalad/otp,vinoski/otp,dgud/otp,getong/otp,bjorng/otp,jj1bdx/otp,jj1bdx/otp,erlang/otp,mikpe/otp,dgud/otp,rlipscombe/otp,erlang/otp,dumbbell/otp,rlipscombe/otp,g-andrade/otp,potatosalad/otp,dgud/otp,mikpe/otp,jj1bdx/otp,vinoski/otp,vinoski/otp,erlang/otp,getong/otp,dumbbell/otp,g-andrade/otp,dumbbell/otp,dumbbell/otp,getong/otp,mikpe/otp,mikpe/otp,rlipscombe/otp,emacsmirror/erlang,dgud/otp,potatosalad/otp,dgud/otp,bjorng/otp