Fix compilation warning due to missing header for sigaction (followup)

This patch removes all references to signal.h when qemu-common.h is included
as they become redundant.

Signed-off-by: Alexandre Raymond <cerbere@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>

audio/audio_pt_int.c

@@ -6,8 +6,6 @@
 #include "audio_int.h"
 #include "audio_pt_int.h"
 
-#include <signal.h>
-
 static void GCC_FMT_ATTR(3, 4) logerr (struct audio_pt *pt, int err,
                                        const char *fmt, ...)
 {

audio/sdlaudio.c

@@ -32,7 +32,6 @@
 #elif defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__DragonFly__)
 #include <pthread.h>
 #endif
-#include <signal.h>
 #endif
 
 #define AUDIO_CAP "sdl"

block/raw-posix.c

@@ -43,7 +43,6 @@
 
 #ifdef __sun__
 #define _POSIX_PTHREAD_SEMANTICS 1
-#include <signal.h>
 #include <sys/dkio.h>
 #endif
 #ifdef __linux__
@@ -53,7 +52,6 @@
 #include <linux/fd.h>
 #endif
 #if defined (__FreeBSD__) || defined(__FreeBSD_kernel__)
-#include <signal.h>
 #include <sys/disk.h>
 #include <sys/cdio.h>
 #endif

bsd-user/syscall.c

@@ -31,7 +31,6 @@
 #include <sys/syscall.h>
 #include <sys/param.h>
 #include <sys/sysctl.h>
-#include <signal.h>
 #include <utime.h>
 
 #include "qemu.h"

darwin-user/signal.c

@@ -21,7 +21,6 @@
 #include <string.h>
 #include <stdarg.h>
 #include <unistd.h>
-#include <signal.h>
 #include <errno.h>
 #include <sys/ucontext.h>
 
@@ -32,8 +31,6 @@
 #undef uc_link
 #endif
 
-#include <signal.h>
-
 #include "qemu.h"
 #include "qemu-common.h"
 

exec.c

@@ -36,7 +36,6 @@
 #include "qemu-timer.h"
 #if defined(CONFIG_USER_ONLY)
 #include <qemu.h>
-#include <signal.h>
 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
 #include <sys/param.h>
 #if __FreeBSD_version >= 700104

linux-user/signal.c

@@ -21,7 +21,6 @@
 #include <string.h>
 #include <stdarg.h>
 #include <unistd.h>
-#include <signal.h>
 #include <errno.h>
 #include <assert.h>
 #include <sys/ucontext.h>

net/tap.c

@@ -27,7 +27,6 @@
 
 #include "config-host.h"
 
-#include <signal.h>
 #include <sys/ioctl.h>
 #include <sys/stat.h>
 #include <sys/wait.h>

posix-aio-compat.c

@@ -17,7 +17,6 @@
 #include <unistd.h>
 #include <errno.h>
 #include <time.h>
-#include <signal.h>
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>

qemu-char.c

@@ -35,7 +35,6 @@
 
 #include <unistd.h>
 #include <fcntl.h>
-#include <signal.h>
 #include <time.h>
 #include <errno.h>
 #include <sys/time.h>

qemu-progress.c

@@ -26,7 +26,6 @@
 #include "osdep.h"
 #include "sysemu.h"
 #include <stdio.h>
-#include <signal.h>
 
 struct progress_state {
     float current;

savevm.c

@@ -23,7 +23,6 @@
  */
 #include <unistd.h>
 #include <fcntl.h>
-#include <signal.h>
 #include <time.h>
 #include <errno.h>
 #include <sys/time.h>

target-i386/helper.c

@@ -21,7 +21,6 @@
 #include <stdio.h>
 #include <string.h>
 #include <inttypes.h>
-#include <signal.h>
 
 #include "cpu.h"
 #include "exec-all.h"

target-ppc/helper.c

@@ -21,7 +21,6 @@
 #include <stdio.h>
 #include <string.h>
 #include <inttypes.h>
-#include <signal.h>
 
 #include "cpu.h"
 #include "exec-all.h"

target-sparc/helper.c

@@ -21,7 +21,6 @@
 #include <stdio.h>
 #include <string.h>
 #include <inttypes.h>
-#include <signal.h>
 
 #include "cpu.h"
 #include "exec-all.h"

ui/curses.c

@@ -24,7 +24,6 @@
 #include <curses.h>
 
 #ifndef _WIN32
-#include <signal.h>
 #include <sys/ioctl.h>
 #include <termios.h>
 #endif

ui/sdl.c

@@ -28,10 +28,6 @@
 #include <SDL.h>
 #include <SDL_syswm.h>
 
-#ifndef _WIN32
-#include <signal.h>
-#endif
-
 #include "qemu-common.h"
 #include "console.h"
 #include "sysemu.h"

usb-bsd.c

@@ -39,7 +39,6 @@
 #else
 #include <bus/usb/usb.h>
 #endif
-#include <signal.h>
 
 /* This value has maximum potential at 16.
  * You should also set hw.usb.debug to gain

usb-linux.c

@@ -37,7 +37,6 @@
 
 #include <dirent.h>
 #include <sys/ioctl.h>
-#include <signal.h>
 
 #include <linux/usbdevice_fs.h>
 #include <linux/version.h>