added subtyping in equations (rhs may be a subtype of lhs)
git-svn-id: https://cavale.enseeiht.fr/svn/lustrec/lustre_compiler/trunk@157 041b043f-8d7c-46b2-b46e-ef0dd855326e
added subtyping in equations (rhs may be a subtype of lhs)
git-svn-id: https://cavale.enseeiht.fr/svn/lustrec/lustre_compiler/trunk@157 041b043f-8d7c-46b2-b46e-ef0dd855326e