Try to suppress some more Visual C++ warnings.

[SVN r57976]

include/boost/functional/hash/hash.hpp

@@ -199,7 +199,7 @@ namespace boost
 
 #if defined(BOOST_MSVC)
 #pragma warning(push)
-#if BOOST_MSVC == 1400
+#if BOOST_MSVC <= 1400
 #pragma warning(disable:4267) // 'argument' : conversion from 'size_t' to 'unsigned int',
                               // possible loss of data
                               // A misguided attempt to detect 64-bit incompatability.

test/hash_complex_test.cpp

@@ -25,6 +25,9 @@ int main() {}
 #pragma warning(disable:4305) // truncation from 'double' to 'const std::complex<float>::_Ty'
 #pragma warning(disable:4309) // truncation of constant value
 #pragma warning(disable:4512) // assignment operator could not be generated
+#if BOOST_MSVC < 1400
+#pragma warning(disable:4267) // conversion from 'size_t' to 'unsigned int', possible loss of data
+#endif
 #endif
 
 #include <complex>

test/hash_float_test.hpp

@@ -23,6 +23,10 @@
 #if defined(BOOST_MSVC)
 #pragma warning(push)
 #pragma warning(disable:4127) // conditional expression is constant
+#pragma warning(disable:4723) // conditional expression is constant
+#if BOOST_MSVC < 1400
+#pragma warning(disable:4267) // conversion from 'size_t' to 'unsigned int', possible loss of data
+#endif
 #endif
 
 char const* float_type(float*) { return "float"; }