Hash: Avoid some intel warnings in tests.

It doesn't have the GCC warning pragma, and doesn't like compiling the integer
tests with floats (used to compile them, but never use them).

[SVN r81679]

test/hash_complex_test.cpp

@@ -35,7 +35,7 @@ int main() {}
 #endif
 #endif
 
-#if defined(__GNUC__)
+#if defined(__GNUC__) && !defined(BOOST_INTEL_CXX_VERSION)
 #pragma GCC diagnostic ignored "-Wfloat-equal"
 #endif