DragonFlyBSD/src f45b9d7usr.bin/gcore gcore.c elfcore.c

gcore - Fix /proc map reading, add verbose option, add limit option

* Our /proc/*/map code allows incremental reads so the old
  code that detects an insufficient buffer size no longer works.
  Fix the code so processes with long maps are properly processed.

* Add -v to verbosely print the segments being dumped.

* Add -l <limit>{,k,m,g,t} to ignore segments larger than the
  specified limitm.
DeltaFile
+34-2usr.bin/gcore/gcore.c
+28-4usr.bin/gcore/elfcore.c
+9-1usr.bin/gcore/gcore.1
+71-73 files

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