Fix text encoding to cp437 which Atari ST's charset is based upon.

Also add dependency on Python script to make rule.

6502/gen6502/vFORTH38/Makefile

@@ -7,5 +7,5 @@ fth: $(fth_files)
 
 # Generic rule for converting .fb blk sources into .fth files.
 
-%.fth: %.fb
+%.fth: %.fb fb2fth.py
 	./fb2fth.py $< $@

6502/gen6502/vFORTH38/fb2fth.py

@@ -14,7 +14,7 @@ def readToString(inFile):
     offset = 0
     while(offset < len(block)):
       # sys.stderr.write("block %d offset %d\n" % (blockNo, offset))
-      line = block[offset:offset+64].decode(encoding="latin_1")
+      line = block[offset:offset+64].decode(encoding="cp437")
       result.append(line.rstrip())
       offset += 64
     blockNo += 1