This change does the following for the scripts that run up through

FILESYSTEMS (the default early_late_divider):
1. Move sysctl to run first
2. Move as many BEFOREs to REQUIREs as possible.
3. Minor effect, move hostid_save from right before mdconfig to right
   after.

A lot of the early scripts make use of sysctl one way or another so
running this first makes a lot of sense given that system-critical
values are often placed in sysctl.conf.

My original purpose for working on this was that while doing some
debugging on other stuff I noticed that the order of execution was
different in the first pass through the early scripts and the second.
In practice that doesn't matter because the scripts are not executed the
second time. However this _can_ result in problems if the difference in
the rcorder moves a script from the late section to the early section in
the second pass (which would mean the script would not get executed).
So, I wanted to make the order of execution of the scripts in the early
section more deterministic.

In the course of debugging the ordering problems I noticed that moving
the BEFOREs to REQUIREs prevented the changes in order from the first
pass to the second pass without having to make any substantial changes.
(Of course it's no secret that I think BEFORE should be avoided as much
as possible, but this is a good example of why.)

Reviewed by:	silence on freebsd-rc@
MFC after:	8.1-RELEASE

etc/rc.d/SERVERS

@@ -4,7 +4,7 @@
 #
 
 # PROVIDE: SERVERS
-# REQUIRE: mountcritremote abi ldconfig
+# REQUIRE: mountcritremote abi ldconfig savecore
 
 #	This is a dummy dependency, for early-start servers relying on
 #	some basic configuration.

etc/rc.d/ddb

@@ -5,7 +5,7 @@
 
 # PROVIDE: ddb
 # REQUIRE: dumpon
-# BEFORE: disks savecore initrandom
+# BEFORE: disks
 # KEYWORD: nojail
 
 . /etc/rc.subr

etc/rc.d/dumpon

@@ -4,7 +4,8 @@
 #
 
 # PROVIDE: dumpon
-# BEFORE: disks savecore initrandom
+# REQUIRE: zvol
+# BEFORE: disks
 # KEYWORD: nojail
 
 . /etc/rc.subr

etc/rc.d/hostid

@@ -28,7 +28,7 @@
 #
 
 # PROVIDE: hostid
-# BEFORE: fsck
+# REQUIRE: sysctl
 # KEYWORD: nojail
 
 . /etc/rc.subr

etc/rc.d/hostid_save

@@ -5,7 +5,6 @@
 
 # PROVIDE: hostid_save
 # REQUIRE: root
-# BEFORE: mountcritlocal
 # KEYWORD: nojail
 
 . /etc/rc.subr

etc/rc.d/initrandom

@@ -4,6 +4,7 @@
 #
 
 # PROVIDE: initrandom
+# REQUIRE: dumpon ddb
 # BEFORE: disks
 # KEYWORD: nojail
 

etc/rc.d/mdconfig

@@ -28,8 +28,7 @@
 #
 
 # PROVIDE: mdconfig
-# REQUIRE: localswap
-# BEFORE: mountcritlocal
+# REQUIRE: localswap root
 
 . /etc/rc.subr
 

etc/rc.d/mountcritlocal

@@ -4,7 +4,7 @@
 #
 
 # PROVIDE: mountcritlocal
-# REQUIRE: root
+# REQUIRE: root hostid_save mdconfig
 # KEYWORD: nojail
 
 . /etc/rc.subr

etc/rc.d/savecore

@@ -4,8 +4,7 @@
 #
 
 # PROVIDE: savecore
-# REQUIRE: syslogd
-# BEFORE:  SERVERS
+# REQUIRE: dumpon ddb syslogd
 # KEYWORD: nojail
 
 . /etc/rc.subr

etc/rc.d/sysctl

@@ -4,8 +4,6 @@
 #
 
 # PROVIDE: sysctl
-# REQUIRE: root
-# BEFORE: FILESYSTEMS
 
 . /etc/rc.subr
 

etc/rc.d/zvol

@@ -5,7 +5,6 @@
 
 # PROVIDE: zvol
 # REQUIRE: hostid
-# BEFORE: fsck
 # KEYWORD: nojail
 
 . /etc/rc.subr