Remove long-obsolete UTF-8 support for Unicode chars larger than U+10…

…FFFF.

charset.c

@@ -604,10 +604,12 @@ public int utf_len(int ch)
  return 3;
  if ((ch & 0xF8) == 0xF0)
  return 4;
+#if 0
  if ((ch & 0xFC) == 0xF8)
  return 5;
  if ((ch & 0xFE) == 0xFC)
  return 6;
+#endif
  /* Invalid UTF-8 encoding. */
  return 1;
 }
@@ -688,6 +690,7 @@ public LWCHAR get_wchar(constant char *p)
  ((p[1] & 0x3F) << 12) | 
  ((p[2] & 0x3F) << 6) | 
  (p[3] & 0x3F));
+#if 0
  case 5:
  /* 111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx */
  return (LWCHAR) (
@@ -705,6 +708,7 @@ public LWCHAR get_wchar(constant char *p)
  ((p[3] & 0x3F) << 12) | 
  ((p[4] & 0x3F) << 6) | 
  (p[5] & 0x3F));
+#endif
  }
 }
 
@@ -735,6 +739,7 @@ public void put_wchar(char **pp, LWCHAR ch)
  *(*pp)++ = (char) (0x80 | ((ch >> 12) & 0x3F));
  *(*pp)++ = (char) (0x80 | ((ch >> 6) & 0x3F));
  *(*pp)++ = (char) (0x80 | (ch & 0x3F));
+#if 0
  } else if (ch < 0x4000000)
  {
  /* 111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx */
@@ -752,6 +757,7 @@ public void put_wchar(char **pp, LWCHAR ch)
  *(*pp)++ = (char) (0x80 | ((ch >> 12) & 0x3F));
  *(*pp)++ = (char) (0x80 | ((ch >> 6) & 0x3F));
  *(*pp)++ = (char) (0x80 | (ch & 0x3F));
+#endif
  }
 }