lib/string/sprintf/, lib/, src/, tests/: Move all sprintf(3)-like APIs to a subdirectory

And have a separate file for each pair of APIs.

Signed-off-by: Alejandro Colomar <alx@kernel.org>

src/chage.c

@@ -34,7 +34,7 @@
 #include "pwio.h"
 #include "shadowio.h"
 #include "shadowlog.h"
-#include "string/sprintf.h"
+#include "string/sprintf/snprintf.h"
 #include "string/strftime.h"
 #include "string/strtcpy.h"
 #include "time/day_to_str.h"

src/chfn.c

@@ -32,7 +32,7 @@
 /*@-exitarg@*/
 #include "exitcodes.h"
 #include "shadowlog.h"
-#include "string/sprintf.h"
+#include "string/sprintf/snprintf.h"
 #include "string/strtcpy.h"
 
 

src/gpasswd.c

@@ -35,7 +35,7 @@
 /*@-exitarg@*/
 #include "exitcodes.h"
 #include "shadowlog.h"
-#include "string/sprintf.h"
+#include "string/sprintf/snprintf.h"
 #include "string/strtcpy.h"
 
 

src/groupmod.c

@@ -39,8 +39,8 @@
 #include "sgroupio.h"
 #endif
 #include "shadowlog.h"
+#include "string/sprintf/stpeprintf.h"
 #include "string/stpecpy.h"
-#include "string/stpeprintf.h"
 
 
 /*

src/login.c

@@ -38,7 +38,7 @@
 /*@-exitarg@*/
 #include "exitcodes.h"
 #include "shadowlog.h"
-#include "string/sprintf.h"
+#include "string/sprintf/snprintf.h"
 #include "string/strftime.h"
 #include "string/strtcpy.h"
 

src/newgrp.c

@@ -25,7 +25,7 @@
 /*@-exitarg@*/
 #include "exitcodes.h"
 #include "shadowlog.h"
-#include "string/sprintf.h"
+#include "string/sprintf/snprintf.h"
 
 
 /*

src/newusers.c

@@ -52,7 +52,7 @@
 #endif				/* ENABLE_SUBIDS */
 #include "chkname.h"
 #include "shadowlog.h"
-#include "string/sprintf.h"
+#include "string/sprintf/snprintf.h"
 
 
 /*

src/su.c

@@ -59,7 +59,7 @@
 /*@-exitarg@*/
 #include "exitcodes.h"
 #include "shadowlog.h"
-#include "string/sprintf.h"
+#include "string/sprintf/snprintf.h"
 #include "string/strtcpy.h"
 
 

src/useradd.c

@@ -65,7 +65,8 @@
 #include "tcbfuncs.h"
 #endif
 #include "shadowlog.h"
-#include "string/sprintf.h"
+#include "string/sprintf/snprintf.h"
+#include "string/sprintf/xasprintf.h"
 
 
 #ifndef SKEL_DIR

src/userdel.c

@@ -52,7 +52,7 @@
 #include "subordinateio.h"
 #endif				/* ENABLE_SUBIDS */
 #include "shadowlog.h"
-#include "string/sprintf.h"
+#include "string/sprintf/xasprintf.h"
 
 
 /*

src/usermod.c

@@ -61,7 +61,7 @@
 #include "tcbfuncs.h"
 #endif
 #include "shadowlog.h"
-#include "string/sprintf.h"
+#include "string/sprintf/xasprintf.h"
 #include "time/day_to_str.h"
 
 

src/vipw.c

@@ -44,7 +44,8 @@
 #include "tcbfuncs.h"
 #endif				/* WITH_TCB */
 #include "shadowlog.h"
-#include "string/sprintf.h"
+#include "string/sprintf/snprintf.h"
+#include "string/sprintf/xasprintf.h"
 
 
 #define MSG_WARN_EDIT_OTHER_FILE _( \