Repair VC8 compile of test applications (#593)

Fix compilation issues for Visual C++ 8.0 (VS2005)

* Add _WIN32_WINNT minimal required version to soci-platform.h to fix windows.h issue related to use of Add/RemoveVectoredExceptionHandler.
* Override SECTION macro since default macro parameter (3 required / 2 given or 2 required / 1 given) do not expand and lead to syntax error.

include/soci/soci-platform.h

@@ -74,6 +74,9 @@ namespace std {
 
 //define DLL import/export on WIN32
 #ifdef _WIN32
+# ifndef _WIN32_WINNT
+#   define _WIN32_WINNT 0x0502 //_WIN32_WINNT_WS03, VS2015 support: https://msdn.microsoft.com/de-de/library/6sehtctf.aspx
+# endif // _WIN32_WINNT
 # ifdef SOCI_DLL
 #  ifdef SOCI_SOURCE
 #   define SOCI_DECL __declspec(dllexport)

tests/common-tests.h

@@ -26,6 +26,11 @@
 #define CATCH_CONFIG_RUNNER
 #include <catch.hpp>
 
+#if defined(_MSC_VER) && (_MSC_VER < 1500)
+#undef SECTION
+#define SECTION(name) INTERNAL_CATCH_SECTION(name, "dummy-for-vc8")
+#endif
+
 #include <algorithm>
 #include <cassert>
 #include <clocale>
@@ -537,7 +542,7 @@ TEST_CASE_METHOD(common_tests, "Exception on not connected", "[core][exception]"
     CHECK_THROWS_AS(sql.get_last_insert_id(s, l), soci_error);
 }
 
-TEST_CASE_METHOD(common_tests, "Basic functionality")
+TEST_CASE_METHOD(common_tests, "Basic functionality", "[core][basics]")
 {
     soci::session sql(backEndFactory_, connectString_);