usage.c: remove reference to busybox.h
*: s/include "busybox.h"/include "libbb.h"

diff --git a/editors/awk.c b/editors/awk.c
index 2d6773b..ea326ec 100644
--- a/editors/awk.c
+++ b/editors/awk.c
@@ -7,7 +7,7 @@
  * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
  */
 
-#include "busybox.h"
+#include "libbb.h"
 #include "xregex.h"
 #include <math.h>
 extern char **environ;
diff --git a/editors/ed.c b/editors/ed.c
index 1706e42..731aef1 100644
--- a/editors/ed.c
+++ b/editors/ed.c
@@ -7,7 +7,7 @@
  * The "ed" built-in command (much simplified)
  */
 
-#include "busybox.h"
+#include "libbb.h"
 
 enum {
 	USERSIZE = sizeof(bb_common_bufsiz1) > 1024 ? 1024
diff --git a/editors/patch.c b/editors/patch.c
index 11b2f25..f65bbf4 100644
--- a/editors/patch.c
+++ b/editors/patch.c
@@ -20,10 +20,8 @@
  */
 
 #include <getopt.h>
-#include <string.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include "busybox.h"
+
+#include "libbb.h"
 
 static unsigned int copy_lines(FILE *src_stream, FILE *dest_stream, const unsigned int lines_count)
 {
diff --git a/editors/sed.c b/editors/sed.c
index 4dd5331..b3c4430 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -58,7 +58,7 @@
 	Reference http://www.opengroup.org/onlinepubs/007904975/utilities/sed.html
 */
 
-#include "busybox.h"
+#include "libbb.h"
 #include "xregex.h"
 
 /* Each sed command turns into one of these structures. */
diff --git a/editors/vi.c b/editors/vi.c
index 66b01e2..97ca802 100644
--- a/editors/vi.c
+++ b/editors/vi.c
@@ -21,7 +21,7 @@
  *	An "ex" line oriented mode- maybe using "cmdedit"
  */
 
-#include "busybox.h"
+#include "libbb.h"
 
 #define ENABLE_FEATURE_VI_CRASHME 0