DragonFlyBSD/src 68ea669bin/sh Makefile, share/man Makefile

Fix building release on master.

* <histedit.h> was moved to /usr/include/priv on master, so add that
  to the include search path when building sh(1) as a bootstrap tool.

* Fix the apropos(1) database generation (used for 'make distribution').
  If the system doesn't have the makewhatis(8) for a compatible
  database, just build no database.
DeltaFile
+5-3share/man/Makefile
+2-2bin/sh/Makefile
+7-52 files

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