unix: move man pages in unix ports
diff --git a/unix/make/Makefile.MID b/unix/make/Makefile.MID
index 9c142d4..71a9d01 100644
--- a/unix/make/Makefile.MID
+++ b/unix/make/Makefile.MID
@@ -31,11 +31,11 @@
 all: $(LIB)
 
 install: $(LIB)
-	test -d $(PREFIX)/man/man3 || mkdir $(PREFIX)/man/man3
-	install -c -m 0644 isalpharune.3 $(PREFIX)/man/man3/isalpharune.3
+	test -d $(PREFIX)/share/man/man3 || mkdir $(PREFIX)/share/man/man3
+	install -c -m 0644 isalpharune.3 $(PREFIX)/share/man/man3/isalpharune.3
 	install -c -m 0644 utf.7 $(PREFIX)/man/man7/utf.7
-	install -c -m 0644 rune.3 $(PREFIX)/man/man3/rune.3
-	install -c -m 0644 runestrcat.3 $(PREFIX)/man/man3/runestrcat.3
+	install -c -m 0644 rune.3 $(PREFIX)/share/man/man3/rune.3
+	install -c -m 0644 runestrcat.3 $(PREFIX)/share/man/man3/runestrcat.3
 	install -c -m 0644 utf.h $(PREFIX)/include/utf.h
 	install -c -m 0644 $(LIB) $(PREFIX)/lib/$(LIB)