* include/bits/valarray_after.h (_DEFINE_EXPR_BINARY_FUNCTION): Change
	scalar parameters to be a non-deduced context.
	* include/std/valarray (_DEFINE_BINARY_OPERATOR): Likewise. Adjust
	whitespace.
	* testsuite/26_numerics/valarray/operators.cc: Test scalar operands.
	* testsuite/26_numerics/valarray/transcend.cc: New.

From-SVN: r261610