STDLIB: Eliminate use of unquoted atom 'maybe'
STDLIB: Eliminate use of unquoted atom 'maybe'

The test suite for syntax_tools tries to parse all files in Kernel and
STDLIB (with `maybe` and `else` as reserved keywords), so for that
test case to succeed, we must quote all uses of `maybe`.

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