locale_facets.tcc (num_get<>::do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, bool&), [...]): -Wconversion and -Woverflow fixes.

2007-01-28  Paolo Carlini  <pcarlini@suse.de>

	* include/bits/locale_facets.tcc (num_get<>::do_get(iter_type,
	iter_type, ios_base&, ios_base::iostate&, bool&),
	num_put<>::_M_insert_int(_OutIter, ios_base&, _CharT, _ValueT)):
	-Wconversion and -Woverflow fixes.
	* include/bits/istream.tcc (operator>>(int&), operator>>(short&)):
	Likewise.
	* include/std/valarray (valarray<>::shift, cshift): Likewise.

From-SVN: r121264