c-typeck.c (digest_init): Don't allow arrays of signed or unsigned variants of wchar_t to be initialized...

	* c-typeck.c (digest_init): Don't allow arrays of signed or
	unsigned variants of wchar_t to be initialized by wide string
	constants.  Do allow arrays of enumerated types compatible with
	wchar_t to be initialized by wide string constants.  Refine tests
	distinguishing wide and narrow strings and arrays.  Give specific
	error for arrays of other integer types initialized by string
	constants.
	(output_init_element, process_init_element): Check for
	INTEGRAL_TYPE_P rather than just for INTEGER_TYPE when
	initializing with string constants.

testsuite:
	* gcc.dg/init-string-2.c: New test.

From-SVN: r85146