re PR ada/5909 (Ada has no test suite.)

re PR ada/5909 (Ada has no test suite.)

	* Makefile.generic: Add missing substitution on object_deps handling.

	PR ada/5909:
	* Make-lang.in (check-ada): Enable ACATS test suite.

	* exp_ch3.adb:
	(Freeze_Array_Type): We do not need an initialization routine for types
	derived from String or Wide_String. They should be treated the same
	as String and Wide_String themselves. This caused problems with the
	use of Initialize_Scalars.

	* exp_ch5.adb:
	(Expand_Assign_Record): Do component-wise assignment of non-byte aligned
	composites. This allows use of component clauses that are not byte
	aligned.

	* sem_prag.adb:
	(Analyze_Pragma, case Pack): Generate warning and ignore pack if there
	is an attempt to pack an array of atomic objects.

	* make.adb, prj-env.adb, prj-env.ads: Minor reformatting

	* g-dirope.adb:
	(Basename): Check for drive letters in a pathname only on DOS based OS.

	* make.adb:
	(Gnatmake): When unable to change dir to the object dir, display the
	content of the parent dir of the obj dir, to try to understand why this
	happens.

	* Make-lang.in: Makefile automatically updated

	* sem_ch12.adb:
	(Inline_Instance_Body): Indicate that the save/restore of use_clauses
	should not be done in Save/Restore_Scope_Stack, because it is performed
	locally.

	* sem_ch8.adb:
	(Save_Scope_Stack, Restore_Scope_Stack): Add parameter to indicate
	whether use clauses should be removed/restored.

	* sem_ch8.ads:
	(Save_Scope_Stack, Restore_Scope_Stack): Add parameter to indicate
	whether use clauses should be removed/restored.

From-SVN: r72983