msvcrt: Implement _mbbtype according to MSDN.

dlls/msvcrt/mbcs.c

@@ -26,6 +26,7 @@
 #include "msvcrt.h"
 #include "wine/unicode.h"
 #include "wine/debug.h"
+#include "msvcrt/mbctype.h"
 
 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
 
@@ -740,6 +741,31 @@ unsigned int CDECL _mbbtombc(unsigned int c)
 }
 
 /*********************************************************************
+ *		_mbbtype(MSVCRT.@)
+ */
+int CDECL _mbbtype(unsigned char c, int type)
+{
+    if (type == 1)
+    {
+        if ((c >= 0x20 && c <= 0x7e) || (c >= 0xa1 && c <= 0xdf))
+            return _MBC_SINGLE;
+        else if ((c >= 0x40 && c <= 0x7e) || (c >= 0x80 && c <= 0xfc))
+            return _MBC_TRAIL;
+        else
+            return _MBC_ILLEGAL;
+    }
+    else
+    {
+        if ((c >= 0x20 && c <= 0x7e) || (c >= 0xa1 && c <= 0xdf))
+            return _MBC_SINGLE;
+        else if ((c >= 0x81 && c <= 0x9f) || (c >= 0xe0 && c <= 0xfc))
+            return _MBC_LEAD;
+        else
+            return _MBC_ILLEGAL;
+    }
+}
+
+/*********************************************************************
  *		_ismbbkana(MSVCRT.@)
  */
 int CDECL _ismbbkana(unsigned int c)

dlls/msvcrt/msvcrt.spec

@@ -338,7 +338,7 @@
 @ cdecl _makepath(str str str str str)
 @ cdecl _matherr(ptr) MSVCRT__matherr
 @ cdecl _mbbtombc(long)
-@ stub _mbbtype #(long long)
+@ cdecl _mbbtype(long long)
 # extern _mbcasemap
 @ cdecl _mbccpy (str str)
 @ stub _mbcjistojms #(long)