make use of values submitted on event register form on event confirm form

I wanted to display some info collected via buildForm on a event registration page (CRM_Event_Form_Registration_Register) on the confirmation page (CRM_Event_Form_Registration_Confirm) but the params were protected. So I unprotected them.

first attachment - simple diff
secon attachment - example of buildForm hook using this unprotected var (which I noticed was slightly different from bgm's similar work for contributions