Changed "nochoice" texts to arrows.

the < Allow? > text could look like a button.
Changed it to <<---  --->> to more clearly indicate
that it is not.

It is needed as a way to prevent people from "not making a choice
by chosing the default".
Fix logic bug with allow-online screen.

If the game was shut down before user made a choice on the
"allow-online" screen, the game would not ask again next time.

The is because cmdline resolution parameters will save the option
on startup.
Restructured files and makefiles.

Makefiles now globs the sources except for platform-specific things.
Moved sources under src/
Updated eclipse project and fix wiz.c and windows Makefile.