Move all: target to kern.pre.mk so it matters less where you include

kern.post.mk.

# this should allow us to move kern.post.mk to the last line of the makefiles,
# but I'll do that slowly as I verify that one can do that w/o breaking things.

Submitted by: naddy

sys/conf/kern.post.mk

@@ -9,8 +9,6 @@
 
 .PHONY:	all modules
 
-all: ${KERNEL_KO}
-
 depend: kernel-depend
 clean:  kernel-clean
 cleandepend:  kernel-cleandepend

sys/conf/kern.pre.mk

@@ -82,3 +82,4 @@ SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
 	${SIZE} ${FMT} ${.TARGET} ; chmod 755 ${.TARGET}
 SYSTEM_DEP+= $S/conf/ldscript.$M
 
+all:	${KERNEL_KO}