Clean build and dist before freezing

make-darwin-installer.sh

@@ -1,9 +1,9 @@
 #!/bin/sh
 set -e
 version=`./setup.py --version`
+rm -rf build dist
 ./setup.py compile_catalog
 ./setup-freeze.py bdist_mac
-rm -rf dist
 mkdir dist
 mv build/Tryton.app dist/
 for f in CHANGELOG COPYRIGHT LICENSE; do

make-win32-installer.sh

@@ -2,6 +2,7 @@
 set -e
 version=`./setup.py --version`
 series=${version%.*}
+rm -rf build dist
 ./setup.py compile_catalog
 ./setup-freeze.py install_exe -d dist
 makensis -DVERSION=${version} -DSERIES=${series} setup.nsi