[dvipdfmx] xdvipdfmx VORG issue

[Masamichi Hosoda]

Hi all,

Devs from Japan found that xdvipdfmx could not find the VORG parameter.
Here's a patch to fix it.

```
--- a/source/texk/dvipdfm-x/cidtype0.c
+++ b/source/texk/dvipdfm-x/cidtype0.c
@@ -205,7 +205,7 @@ add_CIDVMetrics (sfnt *sfont, pdf_obj *fontdict,
     vertOriginX   = PDFUNIT(hmtx[gid].advance*0.5);
     vertOriginY   = defaultVertOriginY;
     for (i = 0;
-         i < vorg->numVertOriginYMetrics && gid > vorg->vertOriginYMetrics[i].glyphIndex;
+         i < vorg->numVertOriginYMetrics && gid >= vorg->vertOriginYMetrics[i].glyphIndex;
          i++) {
       if (gid == vorg->vertOriginYMetrics[i].glyphIndex)
         vertOriginY = PDFUNIT(vorg->vertOriginYMetrics[i].vertOriginY);
```

I used the following source to verify that it works.

```
% plain XeTeX
\nopagenumbers
\font\f="[HaranoAjiMincho-Regular.otf]:vertical" \f%
□ｙ□ｙ□ｙ□
\bye
```

The results with and without the patch are attached.

Thanks.

---
Masamichi Hosoda <trueroad at trueroad.jp>
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