ada: Add ctor call after address clause

ada: Add ctor call after address clause

An object initialized by a C++-imported constructor call has the
constructor function call transformed into a procedure call, and the
call is inserted after the object declaration.

If the object has say an address clause, that transformation separates
the declaration from the address clause, causing the translation of
the call to fail.

Keep such clauses next to the declaration by inserting the constructor
procedure call after them.

gcc/ada/ChangeLog:

	* exp_ch3.adb (Expand_N_Object_Declaration): Insert ctor call
	after representation clauses.