stabilize build system: depends, installer, boost/bdb fixes, cross targets groundwork

depends/x86_64-pc-linux-gnu/include/boost/test/detail/enable_warnings.hpp

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+//  (C) Copyright Gennadiy Rozental 2001.
+//  Distributed under the Boost Software License, Version 1.0.
+//  (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/test for the library home page.
+//
+//!@file
+//!@brief enable previously suppressed warnings
+// ***************************************************************************
+
+#ifdef BOOST_MSVC
+# pragma warning(default: 4511) // copy constructor can't not be generated
+# pragma warning(default: 4512) // assignment operator can't not be generated
+# pragma warning(default: 4100) // unreferenced formal parameter
+# pragma warning(default: 4996) // <symbol> was declared deprecated
+# pragma warning(default: 4355) // 'this' : used in base member initializer list
+# pragma warning(default: 4706) // assignment within conditional expression
+# pragma warning(default: 4251) // class 'A<T>' needs to have dll-interface to be used by clients of class 'B'
+# pragma warning(default: 4127) // conditional expression is constant
+# pragma warning(default: 4290) // C++ exception specification ignored except to ...
+# pragma warning(default: 4180) // qualifier applied to function type has no meaning; ignored
+# pragma warning(default: 4275) // non dll-interface class ... used as base for dll-interface class ...
+# pragma warning(default: 4267) // 'var' : conversion from 'size_t' to 'type', possible loss of data
+# pragma warning(default: 4511) // 'class' : copy constructor could not be generated
+# pragma warning(pop)
+#endif
+
+#if BOOST_CLANG
+#pragma clang diagnostic pop
+#endif
+
+#if defined(BOOST_GCC) && (BOOST_GCC >= 4 * 10000 + 6 * 100)
+# pragma GCC diagnostic pop
+#endif
+