product=${product:-firefox}
branch=${branch:-1.9.1}
buildtype=${buildtype:-debug}
profilename=${profilename:-firefox-1.9.1-profile}
profiledirectory=${profiledirectory:-/tmp/firefox-1.9.1-profile}
executablepath=${executablepath:-/work/mozilla/builds/1.9.1/mozilla/firefox-debug/dist}
userpreferences=${userpreferences:-/work/mozilla/mozilla.com/test.mozilla.com/www/prefs/test-user.js}
extensiondir=${extensiondir:-/work/mozilla/mozilla.com/test.mozilla.com/www/xpi}
TEST_MOZILLA_HG=${TEST_MOZILLA_HG:-http://hg.mozilla.org/releases/mozilla-1.9.1}
TEST_MOZILLA_HG_REV=${TEST_MOZILLA_HG_REV:-tip}