contrib: fix zvbi compilation on Win32

contrib/src/zvbi/rules.mak

@@ -15,6 +15,8 @@ $(TARBALLS)/zvbi-$(ZVBI_VERSION).tar.bz2:
 
 zvbi: zvbi-$(ZVBI_VERSION).tar.bz2 .sum-zvbi
 	$(UNPACK)
+	$(APPLY) $(SRC)/zvbi/zvbi-ssize_max.patch
+	$(APPLY) $(SRC)/zvbi/zvbi-ioctl.patch
 ifdef HAVE_WIN32
 	$(APPLY) $(SRC)/zvbi/zvbi-win32.patch
 endif

contrib/src/zvbi/zvbi-ioctl.patch

+diff -ru zvbi.orig/contrib/ntsc-cc.c zvbi/contrib/ntsc-cc.c
+--- zvbi.orig/contrib/ntsc-cc.c	2011-11-06 11:22:47.000000000 +0200
++++ zvbi/contrib/ntsc-cc.c	2011-11-06 11:29:04.000000000 +0200
+@@ -32,7 +32,6 @@
+ #include <fcntl.h>
+ #include <errno.h>
+ #include <locale.h>
+-#include <sys/ioctl.h>
+ #include <sys/types.h>
+ #include <sys/time.h>
+ #ifdef HAVE_GETOPT_LONG
+@@ -44,6 +43,7 @@
+ #include "src/libzvbi.h"
+ 
+ #ifdef ENABLE_V4L2
++#  include <sys/ioctl.h>
+ #  include <asm/types.h>
+ #  include "src/videodev2k.h"
+ #endif

contrib/src/zvbi/zvbi-ssize_max.patch

+Linear memory extents over SSIZE_MAX are undefined, so there is no
+point in protecting against them.
+diff -ru zvbi.orig/src/export.c zvbi/src/export.c
+--- zvbi.orig/src/export.c	2011-11-06 11:22:47.000000000 +0200
++++ zvbi/src/export.c	2011-11-06 11:27:39.000000000 +0200
+@@ -1076,8 +1076,6 @@
+ 		size_t count;
+ 
+ 		count = src_size;
+-		if (unlikely (src_size > SSIZE_MAX))
+-			count = SSIZE_MAX & -4096;
+ 
+ 		for (retry = 10;; --retry) {
+ 			actual = write (e->_handle.fd, src, count);
+@@ -1632,12 +1630,7 @@
+ 			free (e->buffer.data);
+ 		}
+ 
+-		if (unlikely (e->buffer.offset > (size_t) SSIZE_MAX)) {
+-			errno = EOVERFLOW;
+-			actual = -1; /* failed */
+-		} else {
+-			actual = e->buffer.offset;
+-		}
++		actual = e->buffer.offset;
+ 	} else {
+ 		if (VBI_EXPORT_TARGET_ALLOC == e->target)
+ 			free (e->buffer.data);