c-parse.in (c99_block_start, [...]): New.

	* c-parse.in (c99_block_start, c99_block_end,
	c99_block_lineno_labeled_stmt): New.
	(simple_if, do_stmt_start): Use c99_block_lineno_labeled_stmt.
	(stmt): Split off selection and iteration statements into...
	(select_or_iter_stmt): New.  Use c99_block_lineno_labeled_stmt.

testsuite:
	* gcc.dg/c99-scope-1.c: Remove xfail.
	* gcc.dg/c99-scope-2.c: New test.

From-SVN: r37427