* sem_eval.adb (Eval_Concatenation): If left operand is a null string,
get bounds from right operand.
* sem_eval.adb: Minor reformatting
* exp_util.adb (Make_Literal_Range): use bound of literal rather
than Index'First, its lower bound may be different from 1.
* exp_util.adb: Undo earlier change, fixes ACVC regressions C48009B
and C48009J
* prj-nmsc.adb Minor reformatting
* prj-nmsc.adb (Language_Independent_Check): Reset Library flag if
set and libraries are not supported.
* sem_ch3.adb (Build_Derived_Private_Type): set Public status of
private view explicitly, so the back-end can treat as a global
when appropriate.
From-SVN: r47692
