Delete the installer exe when cleaning

Author: brson

mk/clean.mk

@@ -44,7 +44,7 @@ clean-misc:
 	$(Q)rm -Rf $(DOCS)
 	$(Q)rm -Rf $(GENERATED)
 	$(Q)rm -Rf tmp/*
-	$(Q)rm -Rf rust-stage0-*.tar.bz2 $(PKG_NAME)-*.tar.gz dist
+	$(Q)rm -Rf rust-stage0-*.tar.bz2 $(PKG_NAME)-*.tar.gz $(PKG_NAME)-*.exe dist
 	$(Q)rm -Rf $(foreach ext, \
                  html aux cp fn ky log pdf pg toc tp vr cps epub, \
                  $(wildcard doc/*.$(ext)))