FreeBSD/src b894196 (r349425)lib/libcapsicum capsicum_helpers.3 capsicum_helpers.h

MFC r340130, r340134:

r340130: (by oshogbo)

libcapsicum: Introduce caph_{rights,ioctls,fcntls}_limit

The idea behind those functions is not to force consumers to remember that there
is a need to check errno on failure. We already have a caph_enter(3) function
which does the same for cap_enter(2).

r340134: (by oshogbo)

Fix a recusive call introduce in the r340130.
DeltaFile
+24-6lib/libcapsicum/capsicum_helpers.3
+29-0lib/libcapsicum/capsicum_helpers.h
+1-0lib/libcapsicum/Makefile
+54-63 files

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