perf2bolt can extract branch records with histories

Summary:
Added perf2bolt functionality for extracting branch records
with histories of previous branches. The length of the histories
is user defined, and the default is 0 (previous functionality). Also,
DataReader can parse perf2bolt output with histories.
Note: creating profile data with long histories can increase their
size significantly (2x for history of length 1, 3x for length 2 etc).

(cherry picked from FBD3473983)