K 10
svn:author
V 5
mmacy
K 8
svn:date
V 27
2018-05-13T23:24:48.069822Z
K 7
svn:log
V 395
epoch(9): cleanups, additional debug checks, and add global_epoch

- GC the _nopreempt routines
    - to really benefit we'd need a separate routine
    - they're not currently in use
    - they complicate the API for no benefit at this time

- check that we're actually in a epoch section at exit

- handle epoch_call() early in boot

- Fix copyright declaration language

Approved by:	sbruno@

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