Add io_state_test

[SVN r13765]

status/Jamfile

@@ -441,6 +441,8 @@ test-suite integer
       [ run libs/integer/integer_traits_test.cpp ]
     ;
 
+run libs/io/test/ios_state_test.cpp ;
+
 test-suite lambda
     : [ run libs/lambda/test/bind_tests_simple.cpp ]
       [ run libs/lambda/test/bind_tests_advanced.cpp ]

status/regression.cfg

@@ -33,6 +33,7 @@ run libs/graph/test/graph.cpp
 run libs/integer/cstdint_test.cpp
 run libs/integer/integer_test.cpp
 run libs/integer/integer_traits_test.cpp
+run libs/io/test/ios_state_test.cpp
 run libs/lambda/test/bind_tests_simple.cpp
 run libs/lambda/test/operator_tests_simple.cpp
 run libs/math/test/common_factor_test.cpp