config.h.win32.in: Fix and update entries

Make config.h.win32.in reflect on the entries that are in the
autotools/Meson builds more closely.

Also declare that we have fd_set, declare SIZEOF_[SIZE|SSIZE]_T and
SIZEOF_LONG_LONG for 32-bit and x64 builds properly.

Note that since the Visual Studio 2015/2017 CRT's vsnprintf() and
snprintf() are not compliant enough (though they are much closer than
before) for GLib's purporses, we still use the gnulib's implementations
of them, as with the pre-Visual Studio 2015 builds.

config.h.win32.in

@@ -78,15 +78,13 @@
 /* Define to 1 if you have the `bind_textdomain_codeset' function. */
 #define HAVE_BIND_TEXTDOMAIN_CODESET 1
 
-#if (_MSC_VER >= 1900)
 /* Define if you have a version of the snprintf function with semantics as
    specified by the ISO C99 standard. */
-#define HAVE_C99_SNPRINTF 1
+/* #undef HAVE_C99_SNPRINTF */
 
 /* Define if you have a version of the vsnprintf function with semantics as
    specified by the ISO C99 standard. */
-#define HAVE_C99_VSNPRINTF 1
+/* #undef HAVE_C99_VSNPRINTF */
-#endif
 
 /* define to 1 if Carbon is available */
 /* #undef HAVE_CARBON */
@@ -168,12 +166,18 @@
 /* Define to 1 if you have the `getfsstat' function. */
 /* #undef HAVE_GETFSSTAT */
 
+/* Define to 1 if you have the `getgrgid_r' function. */
+/* #undef HAVE_GETGRGID_R */
+
 /* Define to 1 if you have the `getmntent_r' function. */
 /* #undef HAVE_GETMNTENT_R */
 
 /* Define to 1 if you have the `getprotobyname_r' function. */
 /* #undef HAVE_GETPROTOBYNAME_R */
 
+/* Define to 1 if you have the `getpwuid_r' function. */
+/* #undef HAVE_GETPWUID_R */
+
 /* Define to 1 if you have the `getresuid' function. */
 /* #undef HAVE_GETRESUID */
 
@@ -302,6 +306,9 @@
 /* Define to 1 if you have the <malloc.h> header file. */
 #define HAVE_MALLOC_H 1
 
+/* Define to 1 if you have the `mbrtowc' function. */
+#define HAVE_MBRTOWC 1
+
 /* Define to 1 if you have the `memalign' function. */
 /* #undef HAVE_MEMALIGN */
 
@@ -502,6 +509,18 @@
 /* Define to 1 if `st_atim.tv_nsec' is a member of `struct stat'. */
 /* #undef HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC */
 
+/* Define to 1 if `st_birthtim' is a member of `struct stat'. */
+/* #undef HAVE_STRUCT_STAT_ST_BIRTHTIM */
+
+/* Define to 1 if `st_birthtime' is a member of `struct stat'. */
+/* #undef HAVE_STRUCT_STAT_ST_BIRTHTIME */
+
+/* Define to 1 if `st_birthtimensec' is a member of `struct stat'. */
+/* #undef HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC */
+
+/* Define to 1 if `st_birthtim.tv_nsec' is a member of `struct stat'. */
+/* #undef HAVE_STRUCT_STAT_ST_BIRTHTIM_TV_NSEC */
+
 /* Define to 1 if `st_blksize' is a member of `struct stat'. */
 /* #undef HAVE_STRUCT_STAT_ST_BLKSIZE */
 
@@ -545,6 +564,9 @@
 /* Define to 1 if you have the <sys/inotify.h> header file. */
 /* #undef HAVE_SYS_INOTIFY_H */
 
+/* Define to 1 if you have the <sys/mkdev.h> header file. */
+/* #undef HAVE_SYS_MKDEV_H */
+
 /* Define to 1 if you have the <sys/mntctl.h> header file. */
 /* #undef HAVE_SYS_MNTCTL_H */
 
@@ -586,6 +608,9 @@
 /* Define to 1 if you have the <sys/sysctl.h> header file. */
 /* #undef HAVE_SYS_SYSCTL_H */
 
+/* Define to 1 if you have the <sys/times.h> header file. */
+/* #undef HAVE_SYS_TIMES_H */
+
 /* Define to 1 if you have the <sys/time.h> header file. */
 #ifndef _MSC_VER
 #define HAVE_SYS_TIME_H 1
@@ -593,6 +618,12 @@
 /* #undef HAVE_SYS_TIME_H */
 #endif /* _MSC_VER */
 
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+/* #undef HAVE_SYS_UIO_H */
+
 /* Define to 1 if you have the <sys/vfstab.h> header file. */
 /* #undef HAVE_SYS_VFSTAB_H */
 
@@ -602,12 +633,20 @@
 /* Define to 1 if you have the <sys/vmount.h> header file. */
 /* #undef HAVE_SYS_VMOUNT_H */
 
+/* Define to 1 if you have the <sys/wait.h> header file. */
+/* #undef HAVE_SYS_WAIT_H */
+
 /* Define to 1 if you have the <sys/xattr.h> header file. */
 /* #undef HAVE_SYS_XATTR_H */
 
 /* Define to 1 if you have the `timegm' function. */
 /* #undef HAVE_TIMEGM */
 
+/* Define to 1 if you have the <unistd.h> header file. */
+#ifndef _MSC_VER
+# define HAVE_UNISTD_H 1
+#endif
+
 /* Define if your printf function family supports positional parameters as
    specified by Unix98. */
 /* #undef HAVE_UNIX98_PRINTF */
@@ -653,6 +692,9 @@
 /* Define if you have the 'wint_t' type. */
 #define HAVE_WINT_T 1
 
+/* Have a working bcopy */
+/* #undef HAVE_WORKING_BCOPY */
+
 /* Define to 1 if xattr is available */
 /* #undef HAVE_XATTR */
 
@@ -669,19 +711,11 @@
    */
 #define LT_OBJDIR ".libs/"
 
-/* Define to 1 if `major', `minor', and `makedev' are declared in <mkdev.h>.
+/* Do we cache iconv descriptors */
-   */
+/* #undef NEED_ICONV_CACHE */
-/* #undef MAJOR_IN_MKDEV */
-
-/* Define to 1 if `major', `minor', and `makedev' are declared in
-   <sysmacros.h>. */
-/* #undef MAJOR_IN_SYSMACROS */
 
 /* didn't find fd_set */
-#define NO_FD_SET 1
+/* #undef NO_FD_SET */
-
-/* Define to 1 if your C compiler doesn't accept -c and -o together. */
-/* #undef NO_MINUS_C_MINUS_O */
 
 /* Define to the address where bug reports for this package should be sent. */
 #define PACKAGE_BUGREPORT "http://bugzilla.gnome.org/enter_bug.cgi?product=glib"
@@ -714,17 +748,24 @@
 #define SIZEOF_LONG 4
 
 /* The size of `long long', as computed by sizeof. */
-#ifndef _MSC_VER
 #define SIZEOF_LONG_LONG 8
-#else /* _MSC_VER */
-#define SIZEOF_LONG_LONG 0
-#endif /* _MSC_VER */
 
 /* The size of `short', as computed by sizeof. */
 #define SIZEOF_SHORT 2
 
 /* The size of `size_t', as computed by sizeof. */
-#define SIZEOF_SIZE_T 4
+#if (defined(_M_X64) || defined(_M_AMD64))
+# define SIZEOF_SIZE_T 8
+#else
+# define SIZEOF_SIZE_T 4
+#endif
+
+/* The size of `ssize_t', as computed by sizeof. */
+#if (defined(_M_X64) || defined(_M_AMD64))
+# define SIZEOF_SSIZE_T 8
+#else
+# define SIZEOF_SSIZE_T 4
+#endif
 
 /* The size of `void *', as computed by sizeof. */
 #ifdef _MSC_VER