fix mvnDebug which was not working anymore for unix
fix mvnDebug which was not working anymore for unix

Signed-off-by: olivier lamy <d3548cf353cfa8a03c6f2a815e39e2c0a78449a5@apache.org>

olamy/maven,mcculls/maven,cstamas/maven,apache/maven,apache/maven,cstamas/maven,olamy/maven,olamy/maven,mcculls/maven,cstamas/maven,apache/maven,mcculls/maven