makefile.unix,dist: use ascii for text output
this prevents unknown escapes containing '-'s getting stripped on OS X
when a tty targeted font is used
@@ -474,7 +474,7 @@ dist: all
for m in man/[cdv]webp.1 man/gif2webp.1 man/webpmux.1 \
man/img2webp.1 man/webpinfo.1; do \
basenam=$$(basename $$m .1); \
- $(GROFF) -t -e -man -T utf8 $$m \
+ $(GROFF) -t -e -man -T ascii $$m \
| $(COL) -bx >$(DESTDIR)/doc/$${basenam}.txt; \
$(GROFF) -t -e -man -T html $$m \
| $(COL) -bx >$(DESTDIR)/doc/$${basenam}.html; \
