more than half the warnings on gcc4, and makes sure we do not
get signedness problems between platforms where char is defined
with different signedness. Also set line-ending properites for
some bison/flex files that did not have it set.
git-svn-id: svn+ssh://svn.gna.org/svn/warzone/trunk@563 4a71c877-e1ca-e34f-864e-861f7616d084