Linux: Needs to be defined a hot key as default for using IMESPI

Regarding 4339460, the end-users that use IMESPI have to define a hot key to
the environment variables before executing java application/applet.
This description is already written in Readme, but some hot key should be
defined as system default. Because the mechanism that input method selection
menu item appears on system menu automatically if IME exists under the
JREHOME/lib/ext is provided on win32/solaris platforms as default, but it forces
end-users to define on linux only.

kenichi.kurosaki@Japan 2000-07-17