Fixed ACIP->TMW vowels like 'I etc.

Fixed ACIP->Unicode/TMW for BDE, which should be B-DE, not B+DE, because the former is legal Tibetan.

The ACIP->EWTS subroutine has improved.

TMW->Wylie and TMW->ACIP are improved in error cases.

TMW->ACIP has friendly embedded error messages now.

source/org/thdl/tib/text/DuffCode.java

@@ -168,7 +168,7 @@ public final class DuffCode {
  * recursion (manifesting as a StackOverflowError)) */
 	public String toString(boolean TMW) {
         boolean[] err = new boolean[] { false };
-		return "<duffcode font="
+		return "<glyph font="
             + (TMW
                ? TibetanMachineWeb.tmwFontNames
                : TibetanMachineWeb.tmFontNames)[fontNum]