pfSense

This is 2020. Issue #9245

Fix copyright message years to reflect BSDP -> ESF -> Netgate

Fixed #9245 updating copyright notices

Update the Copyright notice for pfSense.

Move copyright from ESF to Netgate

Move to Apache License 2.0

Review license / copyright on all files (final round)

Review license / copyright on all files (1st round)

Internationalize console halt script

This file previously had to have a space after "Do you want to proceed [y|n]?" to make the prompt for user input nice. That made it one of the few exceptions to the code style guide, where lines are not supposed to have blank space at the end....

Delete Id comment lines from etc files

A bit more crud cleaned out
Note: lots of the /etc files have old style copyright stuff or no
copyright stuff.

Move main pfSense content to src/