improve genfilelist

Improved genfilelist to not record .DS_Store files.

Makefile

@@ -300,7 +300,8 @@ genfilelist:
 	@echo '=-=-=-=-= IOCCC begin make $@ =-=-=-=-='
 	@-for i in ${YEARS}; do \
 	    rm -f "$$i/.genfilelist.tmp"; \
-	    find "$$i" -mindepth 1 -maxdepth 1 -type f ! -path "$$i/.genfilelist.tmp" | sort -d -u > "$$i/.genfilelist.tmp"; \
+	    find "$$i" -mindepth 1 -maxdepth 1 -type f ! -path "$$i/.genfilelist.tmp" ! -name .DS_Store | \
+	      sort -d -u > "$$i/.genfilelist.tmp"; \
 	    if ${CMP} -s "$$i/.genfilelist.tmp" "$$i/.filelist"; then \
 		${RM} -f "$$i/.genfilelist.tmp"; \
 		echo "$$i/.filelist already up to date"; \