Reload this web application, if reloading is supported.
IMPLEMENTATION NOTE: This method is designed to deal with reloads required by changes to classes in the underlying repositories of our class loader and changes to the web.xml file. It does not handle changes to any context.xml file. If the context.xml has changed, you should stop this Context and create (and start) a new Context instance instead. Note that there is additional code in CoyoteAdapter#postParseRequest()
to handle mapping requests to paused Contexts.
@exception IllegalStateException if the reloadable
property is set to false
.