Add using namespace literals to tests that use them

Author: mborland

examples/literals.cpp

@@ -5,6 +5,8 @@
 #include <boost/decimal.hpp>
 #include <cassert>
 
+using namespace boost::decimal::literals;
+
 template <typename T>
 bool float_equal(T lhs, T rhs)
 {

test/crash_report_1.cpp

@@ -7,6 +7,7 @@
 #include <iostream>
 
 using namespace boost::decimal;
+using namespace boost::decimal::literals;
 
 int main()
 {

test/test_constants.cpp

@@ -8,6 +8,7 @@
 
 using namespace boost::decimal;
 using namespace boost::decimal::numbers;
+using namespace boost::decimal::literals;
 
 template <typename Dec>
 void test_constants()

test/test_literals.cpp

@@ -8,6 +8,7 @@
 #include <boost/core/lightweight_test.hpp>
 
 using namespace boost::decimal;
+using namespace boost::decimal::literals;
 
 void test_decimal32_literals()
 {