修改NGUI 3.11 的控件 inputfileld hide input 属性bug

1.勾选hideinput属性后，输入中文，会出现，无法显示的问题。

2.勾选hideinput属性后，密码框会出现第一个字母被吃掉的问题

解决方案：控件都不要勾选hideinput属性,代码做如下修改（绿色部分为修改后的代码）

1.确保inputfield的label不是多行

2.代码中强制打开hideinput

string val;
                TouchScreenKeyboardType kt;

                if (inputShouldBeHidden)
                {
                    TouchScreenKeyboard.hideInput = true;
                    kt = (TouchScreenKeyboardType)((int)keyboardType);
                    val = "|";
                }
                else if (inputType == InputType.Password)
                {
                    TouchScreenKeyboard.hideInput = true;
                    kt = (TouchScreenKeyboardType)((int)keyboardType);
                    val = mValue;
                    mSelectionStart = mSelectionEnd;
                }
                else
                {
                    TouchScreenKeyboard.hideInput = true;
                    kt = (TouchScreenKeyboardType)((int)keyboardType);
                    val = mValue;
                    mSelectionStart = mSelectionEnd;

3.显示闪烁光标

#if MOBILE
            //if (selected && (mKeyboard == null || inputShouldBeHidden))//deke old
            if (selected && (mKeyboard == null || true))//deke new
#else
            if (selected)
#endif

这样修改后，不会显示屏幕键盘上面的小输入框。输入一切正常

deke 2017.3.18