product=${product:-firefox}
branch=${branch:-1.8.0}
buildtype=${buildtype:-debug}
profilename=${profilename:-firefox-1.8.0-too-much-gc-profile}
profiledirectory=${profiledirectory:-/tmp/firefox-1.8.0-too-much-gc-profile}
executablepath=${executablepath:-/work/mozilla/builds/1.8.0-too-much-gc/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}