Thanks to G_money and other suggestions for this excellent solution to input-text with inline dropdown... here's another great solution.
<form class="form-inline" role="form" id="yourformID-form" action="" method="post">
<div class="input-group">
<span class="input-group-addon"><i class="fa fa-male"></i></span>
<div class="form-group">
<input size="50" maxlength="50" class="form-control" name="q" type="text">
</div>
<div class="form-group">
<select class="form-control" name="category">
<option value=""></option>
<option value="0">select1</option>
<option value="1">select2</option>
<option value="2">select3</option>
</select>
</div>
</div>
</form>
This works with Bootstrap 3: allowing input-text inline with a select dropdown. Here's what it looks like below...