Added warning(push) and warning(pop) around all of the inclusions of cryptopp/*.h

I also added a warning(push)/(pop) around crpytlib.cpp because it would go crazy with warnings.

So now, the only warning from cryptopp that is not blocked is 'unreferenced local function has been removed', which also occurs at a single function.

lib/cryptopp/cryptlib.cpp

@@ -4,6 +4,12 @@
 
 #ifndef CRYPTOPP_IMPORTS
 
+
+#ifdef _MSC_VER
+	#pragma warning(push)
+	#pragma warning(disable:4702)
+#endif
+
 #include "cryptlib.h"
 #include "misc.h"
 #include "filters.h"
@@ -825,4 +831,8 @@ void AuthenticatedKeyAgreementDomain::GenerateEphemeralKeyPair(RandomNumberGener
 
 NAMESPACE_END
 
+#ifdef _MSC_VER
+	#pragma warning(pop)
+#endif
+
 #endif