Typedef the subtypes of QObject in qemu/typedefs.h, too

This renders many inclusions of qapi/qmp/q*.h superfluous. They'll be
dropped in the next few commits.

Backports commit 9f5c734d591e26186a71f9e36d752f4798df3672 from qemu

qemu/include/qapi/qmp/qbool.h

@@ -17,10 +17,10 @@
 #include "unicorn/platform.h"
 #include "qapi/qmp/qobject.h"
 
-typedef struct QBool {
+struct QBool {
     QObject_HEAD;
     bool value;
-} QBool;
+};
 
 QBool *qbool_from_bool(bool value);
 bool qbool_get_bool(const QBool *qb);

qemu/include/qapi/qmp/qdict.h

@@ -27,11 +27,11 @@ typedef struct QDictEntry {
     QLIST_ENTRY(QDictEntry) next;
 } QDictEntry;
 
-typedef struct QDict {
+struct QDict {
     QObject_HEAD;
     size_t size;
     QLIST_HEAD(,QDictEntry) table[QDICT_BUCKET_MAX];
-} QDict;
+};
 
 /* Object API */
 QDict *qdict_new(void);

qemu/include/qapi/qmp/qlist.h

@@ -22,10 +22,10 @@ typedef struct QListEntry {
     QTAILQ_ENTRY(QListEntry) next;
 } QListEntry;
 
-typedef struct QList {
+struct QList {
     QObject_HEAD;
     QTAILQ_HEAD(,QListEntry) head;
-} QList;
+};
 
 #define qlist_append(qlist, obj) \
         qlist_append_obj(qlist, QOBJECT(obj))

qemu/include/qapi/qmp/qnum.h

@@ -23,7 +23,7 @@ typedef enum {
     QNUM_DOUBLE
 } QNumKind;
 
-typedef struct QNum {
+struct QNum {
     QObject base;
     QNumKind kind;
     union {
@@ -31,7 +31,7 @@ typedef struct QNum {
         uint64_t u64;
         double dbl;
     } u;
-} QNum;
+};
 
 QNum *qnum_from_int(int64_t value);
 QNum *qnum_from_uint(uint64_t value);

qemu/include/qapi/qmp/qstring.h

@@ -16,12 +16,12 @@
 #include "unicorn/platform.h"
 #include "qapi/qmp/qobject.h"
 
-typedef struct QString {
+struct QString {
     QObject_HEAD;
     char *string;
     size_t length;
     size_t capacity;
-} QString;
+};
 
 QString *qstring_new(void);
 QString *qstring_from_str(const char *str);

qemu/include/qemu/typedefs.h

@@ -69,7 +69,12 @@ typedef struct QEMUSizedBuffer QEMUSizedBuffer;
 typedef struct QEMUTimer QEMUTimer;
 typedef struct QEMUTimerListGroup QEMUTimerListGroup;
 typedef struct QemuConsole QemuConsole;
+typedef struct QBool QBool;
+typedef struct QDict QDict;
+typedef struct QList QList;
+typedef struct QNum QNum;
 typedef struct QObject QObject;
+typedef struct QString QString;
 typedef struct RAMBlock RAMBlock;
 typedef struct Range Range;
 typedef struct SHPCDevice SHPCDevice;