delay lore scan until a while after startup

Author Daniel Pittman <daniel@rimspace.net>
Author date 2018-08-26 15:57:42
Author local date 2018-08-26 11:57:42 -0400
Committer Daniel Pittman <daniel@rimspace.net>
Committer date 2018-08-26 15:57:42
Committer local date 2018-08-26 11:57:42 -0400
Commit b6995048aebfca8a2ece167ed5b0b227c6ad81d4
Tree ef241ace24ee073e977f0e4cc2692eabc3d2bdac
Parent e680a252524b999582b4da2c5323570a47e20b21
delay lore scan until a while after startup

Delaying the scan cuts the runtime to about a third, mostly
because everyone else is also busy, busy, busy doing their own
post-zone-in initialization.