libdecnumber: Clean up includes

Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>

libdecnumber/decContext.c

@@ -35,8 +35,7 @@
 /* context structures.						      */
 /* ------------------------------------------------------------------ */
 
-#include <string.h>	      /* for strcmp */
-#include <stdio.h>	      /* for printf if DECCHECK */
+#include "qemu/osdep.h"
 #include "libdecnumber/dconfig.h"
 #include "libdecnumber/decContext.h"
 #include "libdecnumber/decNumberLocal.h"

libdecnumber/decNumber.c

@@ -166,10 +166,7 @@
 /*	**  -- raise to the power				      */
 /* ------------------------------------------------------------------ */
 
-#include <stdlib.h>		   /* for malloc, free, etc. */
-#include <stdio.h>		   /* for printf [if needed] */
-#include <string.h>		   /* for strcpy */
-#include <ctype.h>		   /* for lower */
+#include "qemu/osdep.h"
 #include "libdecnumber/dconfig.h"
 #include "libdecnumber/decNumber.h"
 #include "libdecnumber/decNumberLocal.h"

libdecnumber/dpd/decimal128.c

@@ -39,8 +39,7 @@
 /*								      */
 /* Error handling is the same as decNumber (qv.).		      */
 /* ------------------------------------------------------------------ */
-#include <string.h>	      /* [for memset/memcpy] */
-#include <stdio.h>	      /* [for printf] */
+#include "qemu/osdep.h"
 
 #include "libdecnumber/dconfig.h"
 #define	 DECNUMDIGITS 34      /* make decNumbers with space for 34 */

libdecnumber/dpd/decimal32.c

@@ -39,8 +39,7 @@
 /*								      */
 /* Error handling is the same as decNumber (qv.).		      */
 /* ------------------------------------------------------------------ */
-#include <string.h>	      /* [for memset/memcpy] */
-#include <stdio.h>	      /* [for printf] */
+#include "qemu/osdep.h"
 
 #include "libdecnumber/dconfig.h"
 #define	 DECNUMDIGITS  7      /* make decNumbers with space for 7 */

libdecnumber/dpd/decimal64.c

@@ -39,8 +39,7 @@
 /*								      */
 /* Error handling is the same as decNumber (qv.).		      */
 /* ------------------------------------------------------------------ */
-#include <string.h>	      /* [for memset/memcpy] */
-#include <stdio.h>	      /* [for printf] */
+#include "qemu/osdep.h"
 
 #include "libdecnumber/dconfig.h"
 #define	 DECNUMDIGITS 16      /* make decNumbers with space for 16 */