Finish the asbestos suited move of $mach/conf/*.$mach to conf/*.$mach.

Fix some more typos.

sys/conf/Makefile.alpha

@@ -12,7 +12,7 @@
 # after which you should do
 #	 config machineid
 # Generic makefile changes should be made in
-#	/sys/alpha/conf/Makefile.alpha
+#	/sys/conf/Makefile.alpha
 # after which config should be rerun for all machines.
 #
 

sys/conf/Makefile.i386

@@ -12,7 +12,7 @@
 # after which you should do
 #	 config machineid
 # Generic makefile changes should be made in
-#	/sys/i386/conf/Makefile.i386
+#	/sys/conf/Makefile.i386
 # after which config should be rerun for all machines.
 #
 

sys/conf/Makefile.ia64

@@ -11,6 +11,8 @@
 #	/sys/ia64/conf/``machineid''
 # after which you should do
 #	 config machineid
+# Generic makefile changes should be made in
+#	/sys/conf/Makefile.ia64
 # after which config should be rerun for all machines.
 #
 

sys/conf/Makefile.pc98

@@ -10,11 +10,11 @@
 # This makefile is constructed from a machine description:
 #	config machineid
 # Most changes should be made in the machine description
-#	/sys/i386/conf/``machineid''
+#	/sys/pc98/conf/``machineid''
 # after which you should do
 #	 config machineid
 # Generic makefile changes should be made in
-#	/sys/i386/conf/Makefile.i386
+#	/sys/conf/Makefile.pc98
 # after which config should be rerun for all machines.
 #
 

sys/conf/Makefile.powerpc

@@ -12,7 +12,7 @@
 # after which you should do
 #	 config machineid
 # Generic makefile changes should be made in
-#	/sys/powerpc/conf/Makefile.powerpc
+#	/sys/conf/Makefile.powerpc
 # after which config should be rerun for all machines.
 #
 

sys/conf/Makefile.sparc64

@@ -12,7 +12,7 @@
 # after which you should do
 #	 config machineid
 # Generic makefile changes should be made in
-#	/sys/sparc64/conf/Makefile.sparc64
+#	/sys/conf/Makefile.sparc64
 # after which config should be rerun for all machines.
 #