Fixed Makefile for make depend some more. The .depend target was not

being created and config.h depended on Makefile.inc being in the wrong
directory so real dependencies were not being checked.  The "depend"
target was not created either so "make depend" always found work to do.

gnu/usr.bin/man/lib/Makefile

@@ -10,14 +10,14 @@ NOPROFILE=	YES
 
 CFLAGS+= -I${.CURDIR} -DSTDC_HEADERS -DPOSIX -DHAS_TROFF -DDO_COMPRESS -DALT_SYSTEMS
 CLEANFILES+=	${CONFH}
-SRCS =	util.c gripes.c
+SRCS =	util.c gripes.c ${CONFH}
 
-libman.a::	${CONFH}
+libman.a:: ${CONFH}
 
 install:
 	@echo -n
 
-depend ${CONFH}:	${.CURDIR}/config.h_dist ../Makefile.inc
+${CONFH}: ${.CURDIR}/config.h_dist ${.CURDIR}/../Makefile.inc
 	sed -e 's,%apropos%,${apropos},' -e 's,%whatis%,${whatis},' \
 	    -e 's,%pager%,${pager},' -e 's,%troff%,${troff},' \
 	    -e 's,%nroff%,${nroff},' -e 's,%tbl%,${tbl},' \