Added RAKE_SUDO envar override (for e.g. non-global JRuby installations)
Added RAKE_SUDO envar override (for e.g. non-global JRuby installations)

git-svn-id: d8f3215415546ce936cf3b822120ca56e5ebeaa0@784896 13f79535-47bb-0310-9956-ffa450edef68

liamchristopher/buildr,apache/buildr,stewi2/buildr,liamchristopher/buildr,apache/buildr,jpcaruana/buildr,jpcaruana/buildr,stewi2/buildr,liamchristopher/buildr,apache/buildr,stewi2/buildr,apache/buildr,liamchristopher/buildr,jpcaruana/buildr,jpcaruana/buildr,stewi2/buildr