OpenBSD/src SbX99d8lib/libc/stdlib labs.3 abs.3

   Replace the vague, incorrect, and confusing BUGS sections with CAVEATS
   clearly stating which arguments have to be avoided, and mention the
   header files defining the constants required for the checks.
   Feedback and OK guenther@, OK bluhm@.
VersionDeltaFile
1.17+15-4lib/libc/stdlib/labs.3
1.12+9-4lib/libc/stdlib/abs.3
1.8+9-4lib/libc/stdlib/imaxabs.3
+33-123 files

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