New Tomcat 4 installer nightly

[Remy Maucherat]

Hi,

I did lots of updates to the installer script, and the result is available
here :
http://jakarta.apache.org/builds/jakarta-tomcat-4.0/nightly/jakarta-tomcat-4
.0-20010716.exe

Changes from the first installer include :
- The JAVA_HOME env variable is no longer needed (instead, it looks in the
registry to get the JDK path).
- Includes the latest security fix.
- Added links to edit the config files.
- Won't delete the configuration and logs when uninstalling (unless you ask
the uninstaller to do so).
- Won't overwrite the configuration files if some are present. That makes
upgrading to a new build easier (but more work will be done in that area).
- Fix the minimum installation.

I think it's solid enough so that we can release the upcoming 4.0b6 packaged
with it.

Remy