#19 resizeterm not available under mingw

[Michael Randel]

If ompiling the text-renderer modul there is an
unresolved reference to resizeterm(). On manpages I've
found, that this is an extension to the curses library.
Under mingw the package pdcurses provides an
implementation of curses and defines an similar
function called resize_term(). Can you make use of this
function when compiling under mingw? Perhaps it is
possible to call this function even when compiling for
UNIX/Linux.

[Stefan Sauer]

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http://www.bzflag.org/doxygen/curses__wrapper_8h-source.html
uses resizeterm() instread of resize_term()