std_bitset.h: Include ostream and istream headers instead of iostream.

2001-03-24  Phil Edwards  <pme@sources.redhat.com>

	* include/bits/std_bitset.h:  Include ostream and istream headers
	instead of iostream.

From-SVN: r40820

libstdc++-v3/ChangeLog

+2001-03-24  Phil Edwards  <pme@sources.redhat.com>
+
+	* include/bits/std_bitset.h:  Include ostream and istream headers
+	instead of iostream.
+
 2001-03-22  Greg Bumgardner <bumgard@roguewave.com>
 
 	* include/bits/ostream.tcc: Use __builtin_alloca.

libstdc++-v3/include/bits/std_bitset.h

@@ -38,7 +38,8 @@
 #include <bits/std_stdexcept.h>   // for invalid_argument, out_of_range, 
 				  // overflow_error
 
-#include <bits/std_iostream.h>   // for istream, ostream
+#include <bits/std_ostream.h>     // for ostream (operator<<)
+#include <bits/std_istream.h>     // for istream (operator>>)
 
 #define _GLIBCPP_BITSET_BITS_PER_WORD (CHAR_BIT*sizeof(unsigned long))
 #define __BITSET_WORDS(__n) \