packages: Move ctf-tools to ctf

Remove the ctf-tools package.  Add a new package which contains the
previous contents of ctf-tools along with libctf.  This removes
CDDL-licensed code from the utilities package.

Set LIB_PACKAGE for libctf so that DTrace runtime doesn't need to
install the tools.

MFC after:	1 day
Reviewed by:	bapt
Sponsored by:	https://www.patreon.com/bsdivy
Differential Revision:	https://reviews.freebsd.org/D52776

cddl/lib/libctf/Makefile

@@ -2,6 +2,8 @@
 .PATH: ${SRCTOP}/cddl/contrib/opensolaris/lib/libctf/common
 .PATH: ${SRCTOP}/sys/cddl/contrib/opensolaris/common/ctf
 
+PACKAGE=	ctf
+LIB_PACKAGE=
 LIB=		ctf
 SRCS=		ctf_create.c \
 		ctf_decl.c \

cddl/usr.bin/ctfconvert/Makefile

@@ -3,7 +3,7 @@
 .PATH: ${SRCTOP}/cddl/contrib/opensolaris/tools/ctf/common
 .PATH: ${SRCTOP}/cddl/contrib/opensolaris/tools/ctf/cvt
 
-PACKAGE=	ctf-tools
+PACKAGE=	ctf
 PROG=		ctfconvert
 SRCS=		alist.c \
 		ctf.c \

cddl/usr.bin/ctfdump/Makefile

@@ -1,7 +1,7 @@
 .PATH: ${SRCTOP}/cddl/contrib/opensolaris/tools/ctf/common
 .PATH: ${SRCTOP}/cddl/contrib/opensolaris/tools/ctf/dump
 
-PACKAGE=	ctf-tools
+PACKAGE=	ctf
 PROG=		ctfdump
 SRCS=		dump.c \
 		symbol.c \

cddl/usr.bin/ctfmerge/Makefile

@@ -1,7 +1,7 @@
 .PATH: ${SRCTOP}/cddl/contrib/opensolaris/tools/ctf/common
 .PATH: ${SRCTOP}/cddl/contrib/opensolaris/tools/ctf/cvt
 
-PACKAGE=	ctf-tools
+PACKAGE=	ctf
 PROG=		ctfmerge
 SRCS=		alist.c \
 		barrier.c \