don't strip

http://bugs.gentoo.org/240110

--- src/Makefile
+++ src/Makefile
@@ -33,7 +33,7 @@
 
 install-bin: $(MAINEXE)
 	mkdir -p $(bindir)
-	$(INSTALL) -s $(MAINEXE) $(bindir)
+	$(INSTALL) $(MAINEXE) $(bindir)
 
 #
 # explicit dependency: final executable