hopefully any other affected *nix systems) now properly discards non-
essential directories after installation.
* Support for Win9x in the installer and postinstall.bat.
* Changed the name of the default installation directory on all platforms
from "I2P" to "i2p" in the installer.
* Changed "wrapper.conf" to "wrapper.config" for naming consistency with the
other configuration files.
* Bugfix: Installer launches postinstall.bat on WinNT/2K properly.
* Temporarily removed install_i2p_service_unix and
uninstall_i2p_service_unix from distribution packages.
* postinstall.bat/postinstall.sh cleans installation directory of all files
not applicable to the host OS.
