a debug message.

  * If the wagon is bound to "file://" then:

    Retrieve the file or base-url file to be "downloaded".

    * If the file (or more usefully, the base-url file) exists, proceed.

    * If the file (or base-url file) doesn't exist, assume that this location
      is part of a file-share. Ignore the request and print a debug message
      as above.

                    <compilerVersion>1.5</compilerVersion>
                    <showDeprecation>true</showDeprecation>
                    <showWarnings>true</showWarnings>
                    <debug>true</debug>
                    <fork>true</fork>
                    <compilerArgs>
                        <arg>-Xlint:unchecked</arg>
                    </compilerArgs>
                    <maxmem>128m</maxmem>