[BOLT] Refactor BinaryBasicBlock to use ADT

Summary:
Refactor members of BinaryBasicBlock. Replace some std containers with
ADT equivalents. The size of BinaryBasicBlock on x86-64 Linux is reduced
from 232 bytes to 192 bytes.

(cherry picked from FBD33081850)
16 files changed
tree: 76e1fa020f3c3af433782f7c972f1611450b5674
  1. bolt/