NetBSD/src VPAJtAGsys/kern kern_lwp.c kern_sig.c

   - lwp_need_userret(): only do it if ONPROC and !curlwp, and explain why.
   - Use signotify() in a couple more places.
VersionDeltaFile
1.209+21-10sys/kern/kern_lwp.c
1.380+7-5sys/kern/kern_sig.c
+28-152 files

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