JspC not work with jasper from tomcat 5.x
in new version of jasper parameter "verbose" is simple -v, without level of 
verbosity
from jasper's help:
Usage: jspc <options> [--] <jsp files>
where jsp files is
    -webapp <dir>      A directory containing a web-app, whose JSP pages
                       will be processed recursively
or any number of
    <file>             A file to be parsed as a JSP page
where options include:
    -help              Print this help message
    -v                 Verbose mode
    -d <dir>           Output Directory (default -Djava.io.tmpdir)