Change wctype_t from int to long.

On LP64 this brings us on par with the other libcs where wctype_t is 8
bytes.

Bug: 12875898
Change-Id: Ice4f538ccf0634ef6667a8d90d0f7f09cec9e1b0
diff --git a/libc/include/wchar.h b/libc/include/wchar.h
index 5ef1cf1..af7593f 100644
--- a/libc/include/wchar.h
+++ b/libc/include/wchar.h
@@ -64,7 +64,7 @@
     WC_TYPE_MAX
 };
 
-typedef int wctype_t;
+typedef long wctype_t;
 
 #define  WEOF        ((wint_t)(-1))