Support wildcard in VirtualHosts configuration

it should be great if we could use wildcard to define virtual host.

<Configure class="org.mortbay.jetty.webapp.WebAppContext">
    <Set name="VirtualHosts">
        <Array type="java.lang.String">
            <Item>*.mydomain.com</Item>

I presume it is technically quite easy to implement. but we need to decide whether we'll it's simple wildcard or a full regex, e.g.

• only support wildcard at the beginning and end, when * is detected, if it's in the first character, then use startsWith and endsWith to match, or
• it's even better if any regex character is detected, including +,*,?, {,}

  , then treat the string as regex to match

the relevant discuss as as follow:
http://archive.codehaus.org/lists/org.codehaus.jetty.user/msg/bc1833ba0809151359v674995bdj943502c26a9ac06e@mail.gmail.com