config system: move some options closer to relevalnt tool subdirectories

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

coreutils/Config.src

@@ -5,10 +5,6 @@
 
 menu "Coreutils"
 
-INSERT
-
-comment "Common options"
-
 config FEATURE_VERBOSE
 	bool "Support verbose options (usually -v) for various applets"
 	default y
@@ -17,6 +13,19 @@ config FEATURE_VERBOSE
 	Also enables long option (--verbose) if it exists.
 	Without this option, -v is accepted but ignored.
 
+comment "Common options for date and touch"
+
+config FEATURE_TIMEZONE
+	bool "Allow timezone in dates"
+	default y
+	depends on DESKTOP
+	help
+	Permit the use of timezones when parsing user-provided data
+	strings, e.g. '1996-04-09 12:45:00 -0500'.
+
+	This requires support for the '%z' extension to strptime() which
+	may not be available in all implementations.
+
 comment "Common options for cp and mv"
 	depends on CP || MV
 
@@ -37,4 +46,6 @@ config FEATURE_HUMAN_READABLE
 	help
 	Allow df, du, and ls to have human readable output.
 
+INSERT
+
 endmenu

coreutils/df.c

@@ -32,6 +32,26 @@
 //config:	-a Show all filesystems
 //config:	-i Inodes
 //config:	-B <SIZE> Blocksize
+//config:
+//config:config FEATURE_SKIP_ROOTFS
+//config:	bool "Skip rootfs in mount table"
+//config:	default y
+//config:	depends on DF
+//config:	help
+//config:	Ignore rootfs entry in mount table.
+//config:
+//config:	In Linux, kernel has a special filesystem, rootfs, which is initially
+//config:	mounted on /. It contains initramfs data, if kernel is configured
+//config:	to have one. Usually, another file system is mounted over / early
+//config:	in boot process, and therefore most tools which manipulate
+//config:	mount table, such as df, will skip rootfs entry.
+//config:
+//config:	However, some systems do not mount anything on /.
+//config:	If you need to configure busybox for one of these systems,
+//config:	you may find it useful to turn this option off to make df show
+//config:	initramfs statistics.
+//config:
+//config:	Otherwise, choose Y.
 
 //applet:IF_DF(APPLET_NOEXEC(df, df, BB_DIR_BIN, BB_SUID_DROP, df))