configure: Use errno.h instead of the non-standard sys/errno.h header.

configure

@@ -5815,7 +5815,6 @@ for ac_header in \
 	sys/cdio.h \
 	sys/elf32.h \
 	sys/epoll.h \
-	sys/errno.h \
 	sys/event.h \
 	sys/exec_elf.h \
 	sys/filio.h \

configure.ac

@@ -460,7 +460,6 @@ AC_CHECK_HEADERS(\
 	sys/cdio.h \
 	sys/elf32.h \
 	sys/epoll.h \
-	sys/errno.h \
 	sys/event.h \
 	sys/exec_elf.h \
 	sys/filio.h \

dlls/avicap32/avicap32_main.c

@@ -29,9 +29,7 @@
 #ifdef HAVE_SYS_STAT_H
 # include <sys/stat.h>
 #endif
-#ifdef HAVE_SYS_ERRNO_H
+#include <errno.h>
-# include <sys/errno.h>
-#endif
 #ifdef HAVE_SYS_TIME_H
 # include <sys/time.h>
 #endif

dlls/dinput/joystick_linux.c

@@ -43,9 +43,6 @@
 # include <sys/ioctl.h>
 #endif
 #include <errno.h>
-#ifdef HAVE_SYS_ERRNO_H
-# include <sys/errno.h>
-#endif
 #ifdef HAVE_LINUX_IOCTL_H
 # include <linux/ioctl.h>
 #endif

dlls/dinput/joystick_linuxinput.c

@@ -39,9 +39,6 @@
 # include <sys/ioctl.h>
 #endif
 #include <errno.h>
-#ifdef HAVE_SYS_ERRNO_H
-# include <sys/errno.h>
-#endif
 #ifdef HAVE_LINUX_INPUT_H
 # include <linux/input.h>
 # undef SW_MAX

dlls/ntdll/file.c

@@ -27,9 +27,6 @@
 #ifdef HAVE_UNISTD_H
 # include <unistd.h>
 #endif
-#ifdef HAVE_SYS_ERRNO_H
-#include <sys/errno.h>
-#endif
 #ifdef HAVE_LINUX_MAJOR_H
 # include <linux/major.h>
 #endif

dlls/ntdll/virtual.c

@@ -23,9 +23,6 @@
 
 #include <assert.h>
 #include <errno.h>
-#ifdef HAVE_SYS_ERRNO_H
-#include <sys/errno.h>
-#endif
 #include <fcntl.h>
 #ifdef HAVE_UNISTD_H
 # include <unistd.h>

dlls/qcap/v4l.c

@@ -38,9 +38,7 @@
 #ifdef HAVE_SYS_MMAN_H
 #include <sys/mman.h>
 #endif
-#ifdef HAVE_SYS_ERRNO_H
+#include <errno.h>
-#include <sys/errno.h>
-#endif
 #ifdef HAVE_SYS_TIME_H
 #include <sys/time.h>
 #endif

dlls/winejoystick.drv/joystick.c

@@ -60,9 +60,7 @@
 #define JOYDEV_NEW "/dev/input/js%d"
 #define JOYDEV_OLD "/dev/js%d"
 #endif
-#ifdef HAVE_SYS_ERRNO_H
+#include <errno.h>
-#include <sys/errno.h>
-#endif
 
 #include "windef.h"
 #include "winbase.h"

dlls/wineoss.drv/midi.c

@@ -60,9 +60,6 @@
 #ifdef HAVE_SYS_POLL_H
 #include <sys/poll.h>
 #endif
-#ifdef HAVE_SYS_ERRNO_H
-#include <sys/errno.h>
-#endif
 #include <sys/soundcard.h>
 
 #include "windef.h"

dlls/wineoss.drv/mmaux.c

@@ -31,9 +31,6 @@
 #ifdef HAVE_SYS_IOCTL_H
 # include <sys/ioctl.h>
 #endif
-#ifdef HAVE_SYS_ERRNO_H
-#include <sys/errno.h>
-#endif
 #include <sys/soundcard.h>
 
 #include "windef.h"

dlls/ws2_32/socket.c

@@ -76,9 +76,6 @@
 #include <ctype.h>
 #include <fcntl.h>
 #include <errno.h>
-#ifdef HAVE_SYS_ERRNO_H
-#include <sys/errno.h>
-#endif
 #ifdef HAVE_NETDB_H
 #include <netdb.h>
 #endif

include/config.h.in

@@ -884,9 +884,6 @@
 /* Define to 1 if you have the <sys/epoll.h> header file. */
 #undef HAVE_SYS_EPOLL_H
 
-/* Define to 1 if you have the <sys/errno.h> header file. */
-#undef HAVE_SYS_ERRNO_H
-
 /* Define to 1 if you have the <sys/event.h> header file. */
 #undef HAVE_SYS_EVENT_H
 

server/change.c

@@ -32,9 +32,6 @@
 #include <limits.h>
 #include <dirent.h>
 #include <errno.h>
-#ifdef HAVE_SYS_ERRNO_H
-#include <sys/errno.h>
-#endif
 
 #include "ntstatus.h"
 #define WIN32_NO_STATUS

server/file.c

@@ -28,9 +28,6 @@
 #include <string.h>
 #include <stdlib.h>
 #include <errno.h>
-#ifdef HAVE_SYS_ERRNO_H
-#include <sys/errno.h>
-#endif
 #include <sys/stat.h>
 #include <sys/time.h>
 #include <sys/types.h>

server/sock.c

@@ -30,9 +30,6 @@
 #include <string.h>
 #include <stdlib.h>
 #include <errno.h>
-#ifdef HAVE_SYS_ERRNO_H
-# include <sys/errno.h>
-#endif
 #include <sys/time.h>
 #include <sys/types.h>
 #ifdef HAVE_SYS_SOCKET_H