[bug-gnu-libiconv] gb18030 for 0x215d7

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Hello, 

Found bizarre exceptions in gb18030ext.h

    else if (wc == 0x20087)
      c = 0xfe51;
    else if (wc == 0x20089)
      c = 0xfe52;
    else if (wc == 0x200cc)
      c = 0xfe53;
    else if (wc == 0x215d7)
      c = 0xfe6c;
    else if (wc == 0x2298f)
      c = 0xfe76;
    else if (wc == 0x241fe)
      c = 0xfe91;

For example: 

According to GB18030-2000/2005: 

0xFE6C -> U+E831

0x9536B937 -> U+215D7

The conversion above is wrong. (or is it a feature?)

--

Allen