TextUtil.concat not preserves hyperlinks
<p>For example code below works right</p>

<pre><code>CharSequence text = TextUtils.concat( "before ", Html.fromHtml( "&lt;b&gt;This works&lt;/b&gt;"), " after " );
myTextView.setText(text, TextView.BufferType.SPANNABLE );
</code></pre>

<p>If i put an hyperlink in the html code, i.e</p>

<pre><code>CharSequence text = TextUtils.concat( "before ", Html.fromHtml( "&lt;a href=\"www.google.it\"&gt;Google&lt;/a&gt;"), " after " );
myTextView.setText(text, TextView.BufferType.SPANNABLE );
Linkify.addLinks( myTextView, Linkify.ALL );
</code></pre>

<p>"Google" is displayed but hyperlink is not undelined correctly and is not clickable. Any advice?</p>
