osx: don't launch installer after building it with bdist_mpkg bdist_mpkg do for some reason default to use the parameter --show ("Open with Installer.app after building") if no parameters are specified. We do not like that. All the important parameters to bdist_mpkg are already specified in setup.py and we don't have any to specify in the Makefile. Instead, specify the parameter '--' which do no harm but will disable the default opening of the installer. This makes it possible to build packages "silently".

--- a/Makefile	Wed Jan 21 05:01:01 2015 +0100
+++ b/Makefile	Wed Jan 21 05:04:46 2015 +0100
@@ -139,7 +139,7 @@
 	@which bdist_mpkg >/dev/null || \
 	   (echo "Missing bdist_mpkg (easy_install bdist_mpkg)"; false)
 	rm -rf dist/mercurial-*.mpkg
-	bdist_mpkg setup.py
+	bdist_mpkg setup.py --
 	mkdir -p packages/osx
 	N=`cd dist && echo mercurial-*.mpkg | sed 's,\.mpkg$$,,'` && hdiutil create -srcfolder dist/$$N.mpkg/ -scrub -volname "$$N" -ov packages/osx/$$N.dmg
 	rm -rf dist/mercurial-*.mpkg