[PDCurses] PDCurses for SDL

[William McBrine]

Now in CVS: a port of PDCurses that uses SDL as the backend. This is 
essentially complete, but could use more testing. Works great on Linux and 
Windows; crashes mysteriously on Mac. (If anyone can fix that, please let me 
know.) It's the first port to support _both_ kinds of resizing, as well as the 
*LINE attributes, previously only available in X11.

Special features: The font or icon can be changed by adding a BMP file named 
pdcfont.bmp or pdcicon.bmp in the starting directory. (The font file should be 
1-bit, with the characters arranged in 8 lines of 32 characters each.) If the 
files don't exist, internal fallbacks are used. Also, to an extent, you can mix 
SDL and PDCurses code. Pointers to the SDL surfaces pdc_screen, pdc_font, and 
pdc_icon are exposed. (This is subject to change.) Any of them can be set 
before calling initscr(); or the pdc_screen created by PDCurses can be used 
with SDL functions after initscr().

Limitations: No wide-character support; the output character set is code page 
437, and the input is restricted to ASCII (plus the special keys) for now. Of 
course, you can change the output character set by changing pdcfont.bmp, but 
the acs_map[] expects CP 437.

The directory is labelled "sdl1" because I'm tentatively planning for a more 
advanced SDL port in the future, to support Unicode and TTF, but I expect this 
one to remain useful, because it's fast, and doesn't depend on anything beyond 
basic SDL.

Currently only set up for an sdl-config based build ("Makefile") for Unix, or 
MinGW ("Makefile.mng") for Windows. (The build system is the main thing that 
needs work before it's released.)

--
William McBrine <[EMAIL PROTECTED]>