Part 2 of r354962: Point MASTER_SITES_LOCAL backup locations to static
servers with the actual data - in case of a geodns failure.

Approved by:	portmgr (bdrewery)

Manually merge r355790

Ticket: #5297
(cherry picked from commit c28b7d4409aa650ba178e03145d5d632d2431a8e)

Conflicts:
	Mk/bsd.sites.mk
Manually merge r354962

This changes the fallback distfile download site to match what
the FreeBSD project is now doing.

Ticket: #5297
(cherry picked from commit 07c3b00ca0e13673eec7f0ab51193f96d6832cb0)

Conflicts:
	Mk/bsd.sites.mk