Bug 172998 Font "vI" cause error under some special situation.
Reproduce step: 1. new a report; 2. insert 3 labels, input "Arial","Bodoni MT","Bodoni MT Black" respectively, set fonts to "Arial","Bodoni MT","Bodoni MT Black"; 3. preview as postscript. Result: Error.
engine/org.eclipse.birt.report.engine.emitter.postscript/src/org/eclipse/birt/report/engine/emitter/postscript/truetypefont/Util.java
{
		byte[] result = new byte[2];
		result[0] = (byte) ( data >> 8 );
		result[1] = (byte) data;
		return result;
	}
	public static  String toHexString( byte[] bytes )
	{
		StringBuffer result = new StringBuffer( );
		for ( int i = 0; i < bytes.length; i++ )
		{
			result.append( toHexString( bytes[i] ) );
		}
		return result.toString( );
	}
	private static  String toHexString( byte b )
	{
		String result;
		result = Integer.toHexString( toInt( b ) );
		if ( result.length( ) == 1 )
		{
			result = "0" + result;
		}
		return result;
	}
	public static  void putInt16( byte[] bytes, int index, int data )
	{
		assert bytes.length > index + 1;
		byte[] intBytes = get2Bytes( data );
		for ( int i = 0; i < 2; i++ )