Release 1.0
All exe's should compile cleanly on MSVC6 with the fxt1pub.dsw project
and on Linux with the Makefile.

Explaination of exes:

ENCODE.EXE
Takes a 32 bit TGA (and 32 bit ONLY -- add an all white alpha channel
if you must) and changes it into a 4 bit FXT1.
Run like this:
        encode -v my32bit.tga myfxt1.out

DECODE.EXE
Reads the output from ENCODE and creates a 32 bit TGA.
Run like this:
        decode myfxt1.out myfxt1.tga

ISUB.EXE
Does image subtraction between two 32 bit TGAs, creates an output diff
image and some statistics.
Run like this:
        isub -v my32bit.tga myfxt1.tga diff.tga

Note that FXT1 assumes that the alpha channel will be used for alpha
blending, so that a pixel with alpha==0 will not have any color
(because it would have been blended to 0 -- why waste bits on it?).
